Irwin Hollander, M.D.
NPI 1003966391 · Anatomic Pathology & Clinical Pathology Physician · Sellersville, PA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Irwin Hollander, M.D. is a Anatomic Pathology & Clinical Pathology Physician provider in Sellersville, PA (NPI 1003966391).
Provider details
- NPI number
- 1003966391
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD014407E (PA)
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
19 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
2,872 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 | 1,357 | $36 |
| Pathology Examination of Tissue Using a Microscope, Moderately High Complexity88307 | 311 | $80 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 184 | $27 |
| Pathology Examination of Tissue Using a Microscope, Moderately Low Complexity88304 | 175 | $11 |
| Microscopic Genetic Analysis of Tumor, Manual88360 | 123 | $41 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 106 | $34 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Lorazepam | 13 |
| Naltrexone Hcl | 13 |
| Risperidone | 12 |
| Bupropion Hclbrand: Bupropion Hcl Sr | 11 |
| Buspirone Hcl | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-11
- Last updated
- 2007-07-08
Frequently asked questions
- What is Irwin Hollander's NPI number?
- Irwin Hollander's National Provider Identifier (NPI) is 1003966391, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Irwin Hollander's specialty?
- Irwin Hollander is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Irwin Hollander located?
- Irwin Hollander's practice location on file with NPPES is 700 Lawn Ave, Sellersville, PA 18960-1548.
- What is Irwin Hollander's phone number?
- The practice phone number listed in the NPPES registry for Irwin Hollander is (215) 453-4522.
- Does Irwin Hollander accept Medicare?
- Irwin Hollander is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Irwin Hollander's NPI active?
- Yes — Irwin Hollander's NPI (1003966391) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.