Stephen Maslak, M.D.
NPI 1083931497 · Infectious Disease Physician · New York, NY
Enrolled with Medicare as Practitioner - Infectious Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Maslak, M.D. is a Infectious Disease Physician provider in New York, NY (NPI 1083931497).
Provider details
- NPI number
- 1083931497
- Entity type
- Individual
- Primary specialty
- Infectious Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 265749 (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
16 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
792 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 549 | $86 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 113 | $143 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 84 | $101 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 29 | $129 |
| 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 | 17 | $18 |
Typical Medicare-allowed amounts for these services range $18–$143 (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 · 12 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Dolutegravir Sodiumbrand: Tivicay | 30 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 29 |
| Bictegrav/Emtricit/Tenofov Alabrand: Biktarvy | 26 |
| Doxycycline Hyclate | 23 |
| Ertapenem Sodiumbrand: Ertapenem | 21 |
| Ceftriaxone Sodiumbrand: Ceftriaxone | 19 |
| Cefadroxil | 16 |
| Daptomycin | 14 |
| Hydroxychloroquine Sulfate | 13 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-04-24
- Last updated
- 2018-08-14
Frequently asked questions
- What is Stephen Maslak's NPI number?
- Stephen Maslak's National Provider Identifier (NPI) is 1083931497, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Maslak's specialty?
- Stephen Maslak is listed in the NPPES registry with a primary specialty of Infectious Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Maslak located?
- Stephen Maslak's practice location on file with NPPES is Northwell Health Physician Partners, New York, NY 10028.
- What is Stephen Maslak's phone number?
- The practice phone number listed in the NPPES registry for Stephen Maslak is (212) 434-3427.
- Does Stephen Maslak accept Medicare?
- Stephen Maslak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Maslak's NPI active?
- Yes — Stephen Maslak's NPI (1083931497) is active in the NPPES registry as of the last update on 2018-08-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.