Parisa Najafzadeh, MD
NPI 1700319944 · Anatomic Pathology & Clinical Pathology Physician · Pasadena, CA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Parisa Najafzadeh, MD is a Anatomic Pathology & Clinical Pathology Physician provider in Pasadena, CA (NPI 1700319944).
Provider details
- NPI number
- 1700319944
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A165605 (CA)
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
9 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
3,840 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, Each Additional Procedure88341 | 1,033 | $29 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 624 | $38 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 308 | $35 |
| Pathology Examination of Tissue Using a Microscope, Moderately High Complexity88307 | 255 | $84 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 198 | $103 |
| Microscopic Genetic Analysis of Tumor, Manual88360 | 154 | $42 |
Practice location
Mailing address
Additional practice locations (1)
- 805 W La Veta Ave Ste 104Orange, CA 92868-3928Phone: (714) 288-4044
Registry dates
- Enumerated
- 2017-04-05
- Last updated
- 2023-12-22
- Certified
- 2023-12-22
Frequently asked questions
- What is Parisa Najafzadeh's NPI number?
- Parisa Najafzadeh's National Provider Identifier (NPI) is 1700319944, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Parisa Najafzadeh's specialty?
- Parisa Najafzadeh is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Parisa Najafzadeh located?
- Parisa Najafzadeh's practice location on file with NPPES is 100 W California Blvd, Pasadena, CA 91105-3010.
- What is Parisa Najafzadeh's phone number?
- The practice phone number listed in the NPPES registry for Parisa Najafzadeh is (626) 352-1444.
- Does Parisa Najafzadeh accept Medicare?
- Parisa Najafzadeh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Parisa Najafzadeh's NPI active?
- Yes — Parisa Najafzadeh's NPI (1700319944) is active in the NPPES registry as of the last update on 2023-12-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.