Nicholas Ladwig, M.D.
NPI 1841617990 · Anatomic Pathology & Clinical Pathology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nicholas Ladwig, M.D. is a Anatomic Pathology & Clinical Pathology Physician provider in San Francisco, CA (NPI 1841617990).
Provider details
- NPI number
- 1841617990
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
12 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
374 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 | 118 | $42 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 109 | $31 |
| Pathology Examination of Tissue Using a Microscope, Moderately High Complexity88307 | 54 | $91 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 35 | $39 |
| Pathology Examination of Tissue Using a Microscope, High Complexity88309 | 25 | $162 |
| Microscopic Genetic Analysis of Tumor, Manual88360 | 17 | $46 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-03-26
- Last updated
- 2021-02-03
- Certified
- 2021-02-03
Frequently asked questions
- What is Nicholas Ladwig's NPI number?
- Nicholas Ladwig's National Provider Identifier (NPI) is 1841617990, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nicholas Ladwig's specialty?
- Nicholas Ladwig is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Nicholas Ladwig located?
- Nicholas Ladwig's practice location on file with NPPES is 505 Parnassus Ave, San Francisco, CA 94143-2204.
- What is Nicholas Ladwig's phone number?
- The practice phone number listed in the NPPES registry for Nicholas Ladwig is (415) 353-7331.
- Does Nicholas Ladwig accept Medicare?
- Nicholas Ladwig is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nicholas Ladwig's NPI active?
- Yes — Nicholas Ladwig's NPI (1841617990) is active in the NPPES registry as of the last update on 2021-02-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.