James Masterson, M.D.
NPI 1639330889 · Urology Physician · Annapolis, MD
Enrolled with Medicare as Practitioner - Urology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Masterson, M.D. is a Urology Physician provider in Annapolis, MD (NPI 1639330889).
Provider details
- NPI number
- 1639330889
- Entity type
- Individual
- Primary specialty
- Urology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- D0090586 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
2,220 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 413 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 350 | $132 |
| Automated Urinalysis Test81003 | 309 | $2 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 205 | $65 |
| Principal Care Management Services for a Single High-Risk Disease, First 30 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99426 | 166 | $65 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 158 | 58 |
| Finasteride | 120 | 43 |
| Levofloxacin | 70 | 65 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 32 | 20 |
| Vibegronbrand: Gemtesa | 31 | 13 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 27 | 21 |
| Alfuzosin Hclbrand: Alfuzosin Hcl Er |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,325 across 88 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 8901 Rockville PikeBethesda, MD 20889-0001Phone: (301) 526-1350
Registry dates
- Enumerated
- 2008-06-20
- Last updated
- 2025-03-12
- Certified
- 2025-03-12
Frequently asked questions
- What is James Masterson's NPI number?
- James Masterson's National Provider Identifier (NPI) is 1639330889, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Masterson's specialty?
- James Masterson is listed in the NPPES registry with a primary specialty of Urology Physician (Allopathic & Osteopathic Physicians).
- Where is James Masterson located?
- James Masterson's practice location on file with NPPES is 810 Bestgate Rd Ste 235, Annapolis, MD 21401-3656.
- What is James Masterson's phone number?
- The practice phone number listed in the NPPES registry for James Masterson is (443) 231-1500.
- Does James Masterson accept Medicare?
- James Masterson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Masterson's NPI active?
- Yes — James Masterson's NPI (1639330889) is active in the NPPES registry as of the last update on 2025-03-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.