James Hollenberg, MD
NPI 1952498032 · Internal Medicine Physician · New York, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Hollenberg, MD is a Internal Medicine Physician provider in New York, NY (NPI 1952498032).
Provider details
- NPI number
- 1952498032
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 146899 (NY)
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
333 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 96 | $76 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 87 | $112 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 79 | $154 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 45 | $19 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 26 | $104 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 39 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 201 | 59 |
| Levothyroxine Sodium | 113 | 23 |
| Lisinopril | 112 | 28 |
| Amlodipine Besylate | 105 | 36 |
| Zolpidem Tartrate | 99 | 20 |
| Simvastatin | 70 | 25 |
| Hydrochlorothiazide | 53 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-09
- Last updated
- 2011-11-10
Frequently asked questions
- What is James Hollenberg's NPI number?
- James Hollenberg's National Provider Identifier (NPI) is 1952498032, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Hollenberg's specialty?
- James Hollenberg is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is James Hollenberg located?
- James Hollenberg's practice location on file with NPPES is 505 E 70th St # Ht-4, New York, NY 10021-4872.
- What is James Hollenberg's phone number?
- The practice phone number listed in the NPPES registry for James Hollenberg is (212) 746-2873.
- Does James Hollenberg accept Medicare?
- James Hollenberg is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Hollenberg's NPI active?
- Yes — James Hollenberg's NPI (1952498032) is active in the NPPES registry as of the last update on 2011-11-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.