John DO
NPI 1346990652 · Family Medicine Physician · Frederick, MD
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John DO is a Family Medicine Physician provider in Frederick, MD (NPI 1346990652).
Provider details
- NPI number
- 1346990652
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- H0102911 (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 tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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 methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Amlodipine Besylate | 22 |
| Atorvastatin Calcium | 20 |
| Losartan Potassium | 17 |
| Metformin Hcl | 16 |
| Trazodone Hcl | 12 |
| Oxybutynin Chloridebrand: Oxybutynin Chloride Er | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 9300 W Sunset RdLas Vegas, NV 89148-4844Phone: (702) 916-5000
Registry dates
- Enumerated
- 2022-03-28
- Last updated
- 2025-07-07
- Certified
- 2025-07-07
Frequently asked questions
- What is John DO's NPI number?
- John DO's National Provider Identifier (NPI) is 1346990652, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John DO's specialty?
- John DO is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John DO located?
- John DO's practice location on file with NPPES is 141 Thomas Johnson Dr Ste 100, Frederick, MD 21702-4509.
- What is John DO's phone number?
- The practice phone number listed in the NPPES registry for John DO is (301) 228-9123.
- Does John DO accept Medicare?
- John DO is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John DO's NPI active?
- Yes — John DO's NPI (1346990652) is active in the NPPES registry as of the last update on 2025-07-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.