Mark Major, M.D.
NPI 1407032485 · Family Medicine Physician · Silver Spring, MD
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Major, M.D. is a Family Medicine Physician provider in Silver Spring, MD (NPI 1407032485).
Provider details
- NPI number
- 1407032485
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD036021 (DC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
- Urgent Care Clinic/Center261QU0200X
Ambulatory Health Care Facilities
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
3,897 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) |
|---|---|---|
| Detection Test By Nucleic Acid for Organism, Amplified Probe Technique87798 | 1,898 | $34 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 503 | $101 |
| Detection Test for Candida Species (yeast), Amplified Probe Technique87481 | 290 | $34 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 195 | $140 |
| Detection Test By Nucleic Acid for Vancomycin Resistance Strep (vre), Amplified Probe Technique87500 | 146 | $34 |
| Detection Test By Nucleic Acid for Staphylococcus Aureus, Methicillin Resistant (mrsa Bacteria), Amplified Probe Technique87641 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 46 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 329 | 110 |
| Atorvastatin Calcium | 244 | 92 |
| Hydrochlorothiazide | 179 | 54 |
| Metformin Hcl | 117 | 40 |
| Lisinopril | 105 | 37 |
| Losartan Potassium | 101 | 35 |
| Semaglutidebrand: Ozempic |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,332 across 52 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
Registry dates
- Enumerated
- 2008-01-21
- Last updated
- 2018-07-30
Frequently asked questions
- What is Mark Major's NPI number?
- Mark Major's National Provider Identifier (NPI) is 1407032485, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Major's specialty?
- Mark Major is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Major located?
- Mark Major's practice location on file with NPPES is 1300 Spring Street, Silver Spring, MD 20910.
- What is Mark Major's phone number?
- The practice phone number listed in the NPPES registry for Mark Major is (301) 585-1833.
- Does Mark Major accept Medicare?
- Mark Major is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Major's NPI active?
- Yes — Mark Major's NPI (1407032485) is active in the NPPES registry as of the last update on 2018-07-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.