James Harrell Masterson, M.D.
Urology Physician · Annapolis, MD
James Harrell Masterson, M.D. is a urology physician with a practice address in Annapolis, Maryland, and NPI 1639330889, issued on Jun 20, 2008. Check the license (Maryland D0090586, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- James Harrell Masterson
- Credential
- M.D.
- Primary taxonomy
- Urology Physician 208800000X
- License numbers
- D0090586 MD
0101246002 VA
Self-reported in NPPES; status is on the state search - Practice location
- 810 Bestgate RD Ste 235, Annapolis, MD 21401
- Phone
- (443) 231-1500
- Enumerated
- Jun 20, 2008
- Record last updated
- Mar 12, 2025
- Medicare enrollment
- Enrolled (PECOS I20170131002634); accepts Medicare assignment
- Medical or professional school
- Uniformed Services Uhs Fe Hebert School Of Med, 2008
- Entity
- Type 1 · individual
Also registered at 810 Bestgate RD Ste 235
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Adam Kern, M.D.Urology Physician1699916080
- Richard Levin, MDUrology Physician1760466486
- Emily Maru, PHYSICIAN ASSISTANTPhysician Assistant1578189650
- Neil Mendhiratta, MDUrology Physician1023472248
- Christine Santayana, D.O.Gynecologic Oncology Physician1023472578
Verify James Harrell Masterson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0090586Check 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 urology physician in 2024
668 Medicare Part D claims for 221 beneficiaries, against an average of 1,340 among the 10,782 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Tamsulosin Hcl158 claims
- Finasteride120 claims
- Levofloxacin70 claims
- Amoxicillin-Clavulanate Potass32 claims
- Gemtesa31 claims
- Sulfamethoxazole-Trimethoprim27 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 83.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $2,325.38
88 payments; by number, the most common kind was food and beverage; the largest payer was Sumitomo Pharma America, Inc. The 9,340 providers of this specialty with any payment received $3,800.04 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Chesapeake Urology Associates LLCSilver Spring, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Urology Physician providers in Maryland
There are 311 urology physician records in Maryland.
Other urology physician records in Maryland
- Leslie Abramowitz, M.D.Baltimore, MD1255388690
- Harbhajan Ajrawat, MDGreenbelt, MD1205883881
- Christen Alevizatos, M.D.Baltimore, MD1154376325
- Harold Alfert, M.D.Baltimore, MD1316901903
- Mohamad Allaf, M.D.Baltimore, MD1619912243
- Matthew Allaway, DOCumberland, MD1386750057
- Jordan Angell, MDWestminster, MD1306021076
- Marc Applestein, M.D.Columbia, MD1679511620
- Natalia Arias Villela, MDTowson, MD1699279927
- Barry Aron, MDRockville, MD1760495261
Common questions
What is James Harrell Masterson, M.D.'s NPI number?
James Harrell Masterson, M.D.'s National Provider Identifier (NPI) is 1639330889, issued on Jun 20, 2008. An NPI identifies a provider in billing; it is not a license.
Where is James Harrell Masterson, M.D. located?
The NPPES record lists a practice address at 810 Bestgate RD Ste 235, Annapolis, MD, 21401. Phone: (443) 231-1500. Providers update this record themselves, so call before visiting.
How can I verify James Harrell Masterson, M.D.'s license?
NPPES lists Maryland license number D0090586, 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 James Harrell Masterson, M.D. prescribe under Medicare Part D?
In 2024, James Harrell Masterson, M.D. had 668 Medicare Part D claims for 221 beneficiaries; the average among urology physician prescribers was 1,340. Part D covers Medicare prescriptions only.
What is James Harrell Masterson, M.D.'s MIPS final score?
The 2023 MIPS final score is 83.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.