Marshall Glesby, M.D.
NPI 1396891644 · Infectious Disease Physician · New York, NY
Enrolled with Medicare as Practitioner - Infectious Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marshall Glesby, M.D. is a Infectious Disease Physician provider in New York, NY (NPI 1396891644).
Provider details
- NPI number
- 1396891644
- Entity type
- Individual
- Primary specialty
- Infectious Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 209163 (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
79 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 50 Minutes99233 | 39 | $138 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 24 | $91 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 16 | $152 |
Typical Medicare-allowed amounts for these services range $91–$152 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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 · 17 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Dolutegravir Sodiumbrand: Tivicay | 62 |
| Atorvastatin Calcium | 37 |
| Amlodipine Besylate | 32 |
| Emtricitabine/Tenofov Alafenambrand: Descovy | 31 |
| Lisinopril | 28 |
| Bictegrav/Emtricit/Tenofov Alabrand: Biktarvy | 25 |
| Valacyclovir Hclbrand: Valacyclovir | 17 |
| Rosuvastatin Calcium | 15 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-26
- Last updated
- 2023-07-06
- Certified
- 2023-07-06
Frequently asked questions
- What is Marshall Glesby's NPI number?
- Marshall Glesby's National Provider Identifier (NPI) is 1396891644, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marshall Glesby's specialty?
- Marshall Glesby is listed in the NPPES registry with a primary specialty of Infectious Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Marshall Glesby located?
- Marshall Glesby's practice location on file with NPPES is 525 E 68th St, New York, NY 10021-4870.
- What is Marshall Glesby's phone number?
- The practice phone number listed in the NPPES registry for Marshall Glesby is (212) 746-7134.
- Does Marshall Glesby accept Medicare?
- Marshall Glesby is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marshall Glesby's NPI active?
- Yes — Marshall Glesby's NPI (1396891644) is active in the NPPES registry as of the last update on 2023-07-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.