William Thomas Greer, M.D.
Family Medicine Physician · Ocean City, MD
William Thomas Greer, M.D. is a family medicine physician with a practice address in Ocean City, Maryland, and NPI 1760465835, issued on Nov 22, 2005. Check the license (Maryland D0035764, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- William Thomas Greer
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- D0035764 MD
Self-reported in NPPES; status is on the state search - Practice location
- 12417 Ocean Gtwy, Ocean City, MD 21842
- Phone
- (410) 213-0111
- Enumerated
- Nov 22, 2005
- Record last updated
- Oct 30, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (410) 213-8459
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 1,912 in Maryland → Look up another NPI →
Also registered at 12417 Ocean Gtwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William Thomas Greer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0035764Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
50% fewer Medicare Part D claims than the average family medicine physician in 2024
1,782 Medicare Part D claims for 122 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 51 claims were for opioids.
Most prescribed
- Atorvastatin Calcium97 claims
- Lisinopril69 claims
- Rosuvastatin Calcium68 claims
- Levothyroxine Sodium57 claims
- Pantoprazole Sodium54 claims
- Metoprolol Succinate48 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.
William Thomas Greer among 1,912 family medicine physician records in Maryland
William Thomas Greer, 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 fileNo · 60% of these records are
- Record last updated2007 · 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).
8 family medicine physician records list a practice address in Ocean City
They are 8 of the 119 NPPES records with a practice address in Ocean City, and 1,912 family medicine physician records in Maryland.
All 1,912 in Maryland → Every provider in Ocean City → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Jason Clem, MDOcean City, MD 218421952390494
- Joseph Crisanti, M.D.Ocean City, MD 218421598752271
- Thomas Fioretti, MDOcean City, MD 218421215979521
- Victor Gong, MDOcean City, MD 218421871594689
- Thomas Penroach, M.D.Ocean City, MD 218421487628079
- Jock Simon, MDOcean City, MD 218421770527699
- Stephen Waters, MDOcean City, MD 218421871583807
- Ronnie Clark, CRNPPocomoke City, MD 218511114762689
Common questions
What is William Thomas Greer, M.D.'s NPI number?
William Thomas Greer, M.D.'s National Provider Identifier (NPI) is 1760465835, issued on Nov 22, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William Thomas Greer, M.D. located?
The NPPES record lists a practice address at 12417 Ocean Gtwy, Ocean City, MD, 21842. Phone: (410) 213-0111. Providers update this record themselves, so call before visiting.
How can I verify William Thomas Greer, M.D.'s license?
NPPES lists Maryland license number D0035764, 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 Thomas Greer, M.D. prescribe under Medicare Part D?
In 2024, William Thomas Greer, M.D. had 1,782 Medicare Part D claims for 122 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.