Margaret Holmes, M.D.
NPI 1619268737 · Anatomic Pathology & Clinical Pathology Physician · Silver Spring, MD
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Holmes, M.D. is a Anatomic Pathology & Clinical Pathology Physician provider in Silver Spring, MD (NPI 1619268737).
Provider details
- NPI number
- 1619268737
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- D83446 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
15 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,406 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 464 | $39 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 321 | $29 |
| Evaluation of Fine Needle Aspirate With Interpretation and Report88173 | 145 | $72 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 130 | $36 |
| Microscopic Genetic Analysis of Tumor, Manual88360 | 97 | $43 |
| Cell Examination of Specimen, Selective Cellular Enhancement Technique88112 | 95 | $29 |
Practice location
Mailing address
Additional practice locations (1)
- 1515 Holcombe BlvdBox 085Houston, TX 77030-4000Phone: (713) 792-3108
Registry dates
- Enumerated
- 2011-04-23
- Last updated
- 2022-07-21
Frequently asked questions
- What is Margaret Holmes's NPI number?
- Margaret Holmes's National Provider Identifier (NPI) is 1619268737, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Holmes's specialty?
- Margaret Holmes is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Margaret Holmes located?
- Margaret Holmes's practice location on file with NPPES is 1500 Forest Glen Rd, Silver Spring, MD 20910-1460.
- What is Margaret Holmes's phone number?
- The practice phone number listed in the NPPES registry for Margaret Holmes is (301) 754-7000.
- Does Margaret Holmes accept Medicare?
- Margaret Holmes is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Holmes's NPI active?
- Yes — Margaret Holmes's NPI (1619268737) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.