William D. Lamm, M.D.
Family Medicine Physician · Cumberland, MD
William D. Lamm, M.D. is a family medicine physician with a practice address in Cumberland, Maryland, and NPI 1639156938, issued on Dec 28, 2005. Check the license (Maryland D0025406, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- William D. Lamm
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- D0025406 MD
Self-reported in NPPES; status is on the state search - Practice location
- 12500 Willowbrook RD, Cumberland, MD 21502
- Phone
- (240) 964-8564
- Enumerated
- Dec 28, 2005
- Record last updated
- Nov 11, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (240) 964-8563
- Medicaid IDs
- 0214942000 WV
262561000 MD - Medicare enrollment
- Enrolled (PECOS I20041012001564); accepts Medicare assignment
- Medical or professional school
- University Of Maryland School Of Medicine, 1980
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 1,912 in Maryland → Look up another NPI →
Also registered at 12500 Willowbrook RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ifeoluwa Adabonyan, M.D.Emergency Medicine Physician1033556675
- Kshitiz Alekh, M.D.Internal Medicine Physician1669605341
- Jorge Andrade, MD, MBAObstetrics & Gynecology Physician1619973914
- Michael Arata, M.D.Vascular & Interventional Radiology Physician1922024942
- Khaled Awad, MDInternal Medicine Physician1902335565
- Ama Awuah-Asamoah, CRNPAcute Care Nurse Practitioner1669754131
Verify William D. Lamm in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0025406Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average family medicine physician in 2024
876 Medicare Part D claims for 52 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Atorvastatin Calcium67 claims
- Levothyroxine Sodium58 claims
- Potassium Chloride39 claims
- Eliquis37 claims
- Amlodipine Besylate30 claims
- Furosemide30 claims
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.
Bills Medicare through one group practice
- Transitioncare LLCCumberland, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William D. Lamm among 1,912 family medicine physician records in Maryland
William D. Lamm, M.D. is one of 1,912 family medicine physician records with a practice address in Maryland. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 87% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1980 · median 2004 among the 1,141 with a school on file
- Record last updated2010 · 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 Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
24 family medicine physician records list a practice address in Cumberland
They are 24 of the 1,070 NPPES records with a practice address in Cumberland, and 1,912 family medicine physician records in Maryland.
All 1,912 in Maryland → Every provider in Cumberland → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Jerry Adams, M.D.Lavale, MD 215021710088265
- Raymond Banfer, MDCumberland, MD 215021093714057
- Gregory Beyer, M.D.Cumberland, MD 215021740381201
- Anthony Bollino, M.D.Lavale, MD 215021528060928
- Linwood Briggs, M.D.Cumberland, MD 215021548351992
- Reed Erickson, M.D.Cumberland, MD 215021629169818
- Allison Evans-Wood, D.O.Cumberland, MD 215021841298809
- Michele Kennedy, DOCumberland, MD 215021275600504
Common questions
What is William D. Lamm, M.D.'s NPI number?
William D. Lamm, M.D.'s National Provider Identifier (NPI) is 1639156938, issued on Dec 28, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William D. Lamm, M.D. located?
The NPPES record lists a practice address at 12500 Willowbrook RD, Cumberland, MD, 21502. Phone: (240) 964-8564. Providers update this record themselves, so call before visiting.
How can I verify William D. Lamm, M.D.'s license?
NPPES lists Maryland license number D0025406, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William D. Lamm, M.D. prescribe under Medicare Part D?
In 2024, William D. Lamm, M.D. had 876 Medicare Part D claims for 52 beneficiaries; 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.