UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 OMB APPROVAL OMB Number: 3235-0145 Expires: December 31, 2005 Estimated average burden hours per response.11

SCHEDULE 13D

Under the Securities Exchange Act of 1934
(Amendment No. 16)

Quality Systems, Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

747582104

(CUSIP Number)

Andrew E. Shapiro Lawndale Capital Management, LLC 591 Redwood Highway, Suite 2345 Mill Valley, CA 94941 415-389-8258 Christopher J. Rupright, Esq. Shartsis, Friese & Ginsburg LLP One Maritime Plaza, 18^th Floor San Francisco, CA 94111 415-421-6500

(Name, Address and Telephone Number of Person
Authorized to Receive Notices and Communications)

April 29, 2003

(Date of Event Which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of sections 240.13d-1(e), 240.13d-1(f) or 140.13d-1(g), check the following box. [ ]

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See section 240.13d-7 for other parties to whom copies are to be sent.

* The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

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1. Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only).

Lawndale Capital Management, LLC

2. Check the Appropriate Box if a Member of a Group (See Instructions)
(a) XXX
(b) ______

3. SEC Use Only

4. Source of Funds (See Instructions) AF

5. Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e) ____

6. Citizenship or Place of Organization California

Number of Shares Beneficially Owned by Each Reporting Person With	7. Sole Voting Power -0-
	8. Shared Voting Power 300,951
	9. Sole Dispositive Power -0-
	10. Shared Dispositive Power 300,951

11. Aggregate Amount Beneficially Owned by Each Reporting Person 300,951

12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See
Instructions) ______

13. Percent of Class Represented by Amount in Row (11) 4.9%

14. Type of Reporting Person (See Instructions)

OO

IA

________

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1. Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only).

Andrew E. Shapiro

2. Check the Appropriate Box if a Member of a Group (See Instructions)
(a) XXX
(b) ______

3. SEC Use Only

4. Source of Funds (See Instructions) AF

5. Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e) ____

6. Citizenship or Place of Organization United States

Number of Shares Beneficially Owned by Each Reporting Person With	7. Sole Voting Power -0-
	8. Shared Voting Power 300,951
	9. Sole Dispositive Power -0-
	10. Shared Dispositive Power 300,951

11. Aggregate Amount Beneficially Owned by Each Reporting Person 300,951

12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See
Instructions) ______

13. Percent of Class Represented by Amount in Row (11) 4.9%

14. Type of Reporting Person (See Instructions)

IN

________

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1. Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only).

Diamond A. Partners, L.P.

2. Check the Appropriate Box if a Member of a Group (See Instructions)
(a) ______
(b) ______

3. SEC Use Only

4. Source of Funds (See Instructions) WC

5. Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e) ____

6. Citizenship or Place of Organization California

Number of Shares Beneficially Owned by Each Reporting Person With	7. Sole Voting Power -0-
	8. Shared Voting Power 262,450
	9. Sole Dispositive Power -0-
	10. Shared Dispositive Power 262,450

11. Aggregate Amount Beneficially Owned by Each Reporting Person 262,450

12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See
Instructions) ______

13. Percent of Class Represented by Amount in Row (11) 4.3%

14. Type of Reporting Person (See Instructions)

PN

________

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Item 1. Security and Issuer

This statement relates to shares of Common Stock (the "Stock") of Quality Systems, Inc. (the "Issuer" or "HOST"). The principal executive office of the Issuer is located at 18191 Von Karman Avenue, Irvine, CA 92612.

Item 2. Identity and Background

The persons filing this statement and the persons enumerated in Instruction C of Schedule 13D and, where applicable, their respective places of organization, general partners, directors, executive officers and controlling persons, and the information regarding them, are as follows:

(a) Lawndale Capital Management, LLC, a California limited liability company ("LCM"),
Diamond A. Partners, L.P., a California limited partnership ("DAP"), and
Andrew E. Shapiro ("Shapiro")
(collectively, the "Filers").

DAP is filing this statement jointly with the other Filers, but not as a member of a group and expressly disclaims membership in a group.

(b) The business address of the Filers is
591 Redwood Highway, Suite 2345, Mill Valley, CA 94941.

(c) Present principal occupation or employment or the Filers and the name, principal business and address of any corporation or other organization in which such employment is conducted:
LCM is the investment adviser to and the general partner of DAP, which is an investment limited partnership. Shapiro is the sole manager of LCM.

(d) During the last five years, none of the Filers has been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors).

(e) During the last five years, none of the Filers was a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

(f) Shapiro is a citizen of the United States of America.

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Item 3. Source and Amount of Funds or Other Consideration

The source and amount of funds used in purchasing the Stock were as follows:

Purchaser	Source of Funds	Amount
LCM	Funds Under Management (1)	$1,748,092.04
DAP	Working Capital	$1,529,763.67

(1) Includes funds of DAP invested in Stock.

Item 4. Purpose of Transaction

The Filers ("Lawndale") have been and may continue to be in contact with Quality System, Inc.'s ("Quality") management, members of Quality's Board of Directors, other significant shareholders and others regarding alternatives that Quality could employ to maximize shareholder value.

Lawndale acquired the Stock solely for investment purposes, and Lawndale may from time to time buy or sell the Stock at its discretion.

Item 5. Interest in Securities of the Issuer

The beneficial ownership of the Stock by each Filer at the date hereof is reflected on that Filer's cover page.

The Filers effected the following transactions in the Stock through the NASDAQ National Market on the dates indicated, and such transactions are the only transactions in the Stock by the Filers since February 28, 2003:

Name		Purchase or Sale		Date		Number of Shares		Price Per Share
LCM	S		4/29/03		4,100		28.00
DAP	S		4/29/03		8,700		28.00
LCM	S		4/29/03		2,699		28.11
DAP	S		4/29/03		38,301		28.11
DAP	S		4/30/03		18,307		29.28

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Item 6. Contracts, Arrangement, Understandings or Relationships with Respect to Securities of the Issuer

LCM is the general partner of DAP and other clients pursuant to limited partnership agreements providing to LCM the authority, among other things, to invest the funds of such clients in Stock, to vote and dispose of Stock and to file this statement on behalf of such clients. Pursuant to such limited partnership agreements, the general partner of such clients is entitled to allocations based on assets under management and realized and unrealized gains.

Item 7. Material to Be Filed as Exhibits

Exhibit A: Agreement Regarding Joint Filing of Statement on Schedule 13D or 13G previously filed.

SIGNATURES

After reasonable inquiry and to the best of my knowledge, I certify that the information set forth in this statement is true, complete and correct.

Dated: May 2, 2003

LAWNDALE CAPITAL MANAGEMENT, LLC By: Andrew E. Shapiro, Manager	Andrew E. Shapiro
DIAMOND A PARTNERS, L.P. By: Lawndale Capital Management, LLC By: Andrew E. Shapiro, Manager

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EXHIBIT A

AGREEMENT REGARDING JOINT FILING

OF STATEMENT ON SCHEDULE 13D OR 13G

The undersigned agree to file jointly with the Securities and Exchange Commission (the "SEC") any and all statements on Schedule 13D or Schedule 13G (and any amendments or supplements thereto) required under section 13(d) of the Securities Exchange Act of 1934, as amended, in connection with purchases by the undersigned of the common stock of Quality Systems, Inc.. For that purpose, the undersigned hereby constitute and appoint Lawndale Capital Management, LLC, a California limited liability company, as their true and lawful agent and attorney-in-fact, with full power and authority for and on behalf of the undersigned to prepare or cause to be prepared, sign, file with the SEC and furnish to any other person all certificates, instruments, agreements and documents necessary to comply with section 13(d) and section 16(a) of the Securities Exchange Act of 1934, as amended, in connection with said purchases, and to do and perform every act necessary and proper to be done incident to the exercise of the forego ing power, as fully as the undersigned might or could do if personally present.

Dated: December 22, 1997.

LAWNDALE CAPITAL MANAGEMENT, LLC By: Andrew E. Shapiro, Manager	DIAMOND A INVESTORS, L.P. By: Lawndale Capital Management, LLC General Partner By: Andrew E. Shapiro, Manager
DIAMOND A PARTNERS, L.P. By: Lawndale Capital Management, LLC By: Andrew E. Shapiro, Manager	Andrew E. Shapiro