Charles Gropper, M.D.
NPI 1659332864 · Dermatology Physician · Bronx, NY
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Gropper, M.D. is a Dermatology Physician provider in Bronx, NY (NPI 1659332864).
Provider details
- NPI number
- 1659332864
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 175302 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
5 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
127 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) |
|---|---|---|
| Initial Nursing Facility Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99304 | 37 | $90 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 32 | $74 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 31 | $108 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 14 | $93 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 13 | $146 |
Typical Medicare-allowed amounts for these services range $74–$146 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ketoconazole | 212 | 63 |
| Triamcinolone Acetonide | 123 | 50 |
| Hydrocortisone | 90 | 39 |
| Ammonium Lactate | 74 | 31 |
| Fluocinonide | 60 | 24 |
| Mupirocin | 53 | 28 |
| Clindamycin Phosphate | 48 | 17 |
| Tretinoin | 40 | 11 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,754 across 39 records (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 (4)
- 2175 Quarry RdBronx, NY 10457-1663Phone: (718) 960-6205Fax: (718) 960-6465
- 2000 E Gun Hill RdBronx, NY 10469-6016Phone: (718) 324-0400Fax: (718) 960-6465
- 4422 3rd AveBronx, NY 10457-2545Phone: (718) 960-9000Fax: (718) 960-6465
- 134 Greenpoint AveBrooklyn, NY 11222-6577Phone: (718) 349-6160Fax: (718) 349-6170
Registry dates
- Enumerated
- 2006-03-29
- Last updated
- 2024-11-12
- Certified
- 2024-11-12
Frequently asked questions
- What is Charles Gropper's NPI number?
- Charles Gropper's National Provider Identifier (NPI) is 1659332864, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Gropper's specialty?
- Charles Gropper is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Gropper located?
- Charles Gropper's practice location on file with NPPES is 4487 3rd Ave Fl 2, Bronx, NY 10457-1526.
- What is Charles Gropper's phone number?
- The practice phone number listed in the NPPES registry for Charles Gropper is (718) 960-5085.
- Does Charles Gropper accept Medicare?
- Charles Gropper is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Gropper's NPI active?
- Yes — Charles Gropper's NPI (1659332864) is active in the NPPES registry as of the last update on 2024-11-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.