Margaret Ryan, M.D.
NPI 1851564447 · Anatomic Pathology & Clinical Pathology Physician · Scottsdale, AZ
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Ryan, M.D. is a Anatomic Pathology & Clinical Pathology Physician provider in Scottsdale, AZ (NPI 1851564447).
Provider details
- NPI number
- 1851564447
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 48373 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 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
3,514 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 | 740 | $11 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 692 | $35 |
| Antibody Evaluation, Each Additional Single Antibody Stain Procedure88350 | 638 | $27 |
| Special Stained Specimen Slides to Examine Tissue Including Interpretation and Report88313 | 305 | $11 |
| Antibody Evaluation, Each Additional Single Antibody Stain Procedure88350 | 281 | $27 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 253 | $33 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-04-04
- Last updated
- 2020-10-06
- Certified
- 2020-10-06
Frequently asked questions
- What is Margaret Ryan's NPI number?
- Margaret Ryan's National Provider Identifier (NPI) is 1851564447, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Ryan's specialty?
- Margaret Ryan is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Margaret Ryan located?
- Margaret Ryan's practice location on file with NPPES is 13400 E Shea Blvd, Scottsdale, AZ 85259-5452.
- What is Margaret Ryan's phone number?
- The practice phone number listed in the NPPES registry for Margaret Ryan is (480) 301-8000.
- Does Margaret Ryan accept Medicare?
- Margaret Ryan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Ryan's NPI active?
- Yes — Margaret Ryan's NPI (1851564447) is active in the NPPES registry as of the last update on 2020-10-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.