Mary-Margaret Allen, MD
NPI 1699118257 · Anatomic Pathology & Clinical Pathology Physician · Nashville, TN
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary-Margaret Allen, MD is a Anatomic Pathology & Clinical Pathology Physician provider in Nashville, TN (NPI 1699118257).
Provider details
- NPI number
- 1699118257
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- ME130875 (FL)
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
13 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,090 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) |
|---|---|---|
| Special Stained Specimen Slides to Examine Tissue Including Interpretation and Report88313 | 237 | $12 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 212 | $30 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 210 | $40 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 87 | $36 |
| Flow Cytometry Technique for Dna Or Cell Analysis, 16 Or More Markers88189 | 66 | $75 |
| Preparation of Tissue for Examination By Removing Any Calcium Present88311 | 45 | $12 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-04-14
- Last updated
- 2025-09-22
- Certified
- 2025-09-22
Frequently asked questions
- What is Mary-Margaret Allen's NPI number?
- Mary-Margaret Allen's National Provider Identifier (NPI) is 1699118257, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary-Margaret Allen's specialty?
- Mary-Margaret Allen is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Mary-Margaret Allen located?
- Mary-Margaret Allen's practice location on file with NPPES is 2000 Church St, Nashville, TN 37236-5848.
- What is Mary-Margaret Allen's phone number?
- The practice phone number listed in the NPPES registry for Mary-Margaret Allen is (615) 284-7950.
- Does Mary-Margaret Allen accept Medicare?
- Mary-Margaret Allen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary-Margaret Allen's NPI active?
- Yes — Mary-Margaret Allen's NPI (1699118257) is active in the NPPES registry as of the last update on 2025-09-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.