Nishant Tiwari, M.D.
NPI 1568717338 · Neuropathology Physician · Portland, OR
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nishant Tiwari, M.D. is a Neuropathology Physician provider in Portland, OR (NPI 1568717338).
Provider details
- NPI number
- 1568717338
- Entity type
- Individual
- Primary specialty
- Neuropathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 58880 (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 tenure25% of score
13 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
317 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 139 | $27 |
| Pathology Examination of Tissue Using a Microscope, Moderately High Complexity88307 | 63 | $79 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 42 | $34 |
| Microscopic Genetic Analysis of Tumor, Manual88360 | 36 | $40 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 23 | $36 |
| Pathology Examination of Specimen During Surgery, First Tissue Block88331 | 14 | $60 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$17 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 1919 E Thomas RdPhoenix, AZ 85016-7710Phone: (602) 933-1283Fax: (602) 933-1284
Registry dates
- Enumerated
- 2012-07-18
- Last updated
- 2024-08-15
- Certified
- 2024-08-15
Frequently asked questions
- What is Nishant Tiwari's NPI number?
- Nishant Tiwari's National Provider Identifier (NPI) is 1568717338, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nishant Tiwari's specialty?
- Nishant Tiwari is listed in the NPPES registry with a primary specialty of Neuropathology Physician (Allopathic & Osteopathic Physicians).
- Where is Nishant Tiwari located?
- Nishant Tiwari's practice location on file with NPPES is 3181 Sw Sam Jackson Park Rd, Portland, OR 97239-3011.
- What is Nishant Tiwari's phone number?
- The practice phone number listed in the NPPES registry for Nishant Tiwari is (503) 494-8276.
- Does Nishant Tiwari accept Medicare?
- Nishant Tiwari is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nishant Tiwari's NPI active?
- Yes — Nishant Tiwari's NPI (1568717338) is active in the NPPES registry as of the last update on 2024-08-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.