Michael W. Warren, MD
Family Medicine Physician · Lancaster, PA
Michael W. Warren, MD is a family medicine physician with a practice address in Lancaster, Pennsylvania, and NPI 1407897655, issued on Jun 9, 2006. Check the license (Pennsylvania MD031880E, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Michael W. Warren
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD031880E PA
Self-reported in NPPES; status is on the state search - Practice location
- 3045 Marietta Ave, Lancaster, PA 17601
- Phone
- (717) 898-2900
- Enumerated
- Jun 9, 2006
- Record last updated
- Dec 1, 2009 (not updated in 17 years: call before relying on the address or phone)
- Medicaid ID
- 001190812 PA
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 7,483 in Pennsylvania → Look up another NPI →
Also registered at 3045 Marietta Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Michael W. Warren in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD031880ECheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average family medicine physician in 2024
27 Medicare Part D claims, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Michael W. Warren among 7,483 family medicine physician records in Pennsylvania
Michael W. Warren, MD is one of 7,483 family medicine physician records with a practice address in Pennsylvania. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 53% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 61% of these records are
- Record last updated2009 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
213 family medicine physician records list a practice address in Lancaster
They are 213 of the 5,378 NPPES records with a practice address in Lancaster, and 7,483 family medicine physician records in Pennsylvania.
All 7,483 in Pennsylvania → Every provider in Lancaster → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Beth Been, D.O.Lancaster, PA 176011811982028
- Jennifer Brighter, M.D.Lancaster, PA 176011760455638
- John Cotter, MDLancaster, PA 176011003801507
- Vito Dicamillo, MDLancaster, PA 176011386621688
- Corey Fogleman, M.D.Lancaster, PA 176011427039239
- Kenneth Hurst, M.D.Lancaster, PA 176011235136755
- Brian Jones, M.D.Lancaster, PA 176011063490944
- Erik Ketels, MDLancaster, PA 176011568449874
Common questions
What is Michael W. Warren, MD's NPI number?
Michael W. Warren, MD's National Provider Identifier (NPI) is 1407897655, issued on Jun 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael W. Warren, MD located?
The NPPES record lists a practice address at 3045 Marietta Ave, Lancaster, PA, 17601. Phone: (717) 898-2900. Providers update this record themselves, so call before visiting.
How can I verify Michael W. Warren, MD's license?
NPPES lists Pennsylvania license number MD031880E, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael W. Warren, MD prescribe under Medicare Part D?
In 2024, Michael W. Warren, MD had 27 Medicare Part D claims; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.