Mary Fietz, M.D.
NPI 1154396133 · Anatomic Pathology & Clinical Pathology Physician · Tempe, AZ
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Fietz, M.D. is a Anatomic Pathology & Clinical Pathology Physician provider in Tempe, AZ (NPI 1154396133).
Provider details
- NPI number
- 1154396133
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 20108 (AZ)
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
20 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
1,956 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 | 510 | $35 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 417 | $27 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 170 | $33 |
| Microscopic Genetic Analysis of Tumor, Manual88360 | 96 | $40 |
| Pathology Examination of Tissue Using a Microscope, Moderately High Complexity88307 | 87 | $78 |
| Pathology Examination of Specimen During Surgery, First Tissue Block88331 | 78 | $59 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-02-22
- Last updated
- 2017-03-21
Frequently asked questions
- What is Mary Fietz's NPI number?
- Mary Fietz's National Provider Identifier (NPI) is 1154396133, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Fietz's specialty?
- Mary Fietz is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Fietz located?
- Mary Fietz's practice location on file with NPPES is 1255 W Washington St, Tempe, AZ 85281-1210.
- What is Mary Fietz's phone number?
- The practice phone number listed in the NPPES registry for Mary Fietz is (602) 685-5211.
- Does Mary Fietz accept Medicare?
- Mary Fietz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Fietz's NPI active?
- Yes — Mary Fietz's NPI (1154396133) is active in the NPPES registry as of the last update on 2017-03-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.