Katherine Mark, MD
NPI 1790949170 · Geriatric Medicine (Internal Medicine) Physician · New York, NY
Enrolled with Medicare as Practitioner - Geriatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Mark, MD is a Geriatric Medicine (Internal Medicine) Physician provider in New York, NY (NPI 1790949170).
Provider details
- NPI number
- 1790949170
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 257937 (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
17 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
435 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 | 168 | $127 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 69 | $85 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 59 | $187 |
| Advance Care Planning, First 30 Minutes99497 | 42 | $82 |
| Critical Care, First 30-74 Minutes99291 | 35 | $232 |
| Advance Care Planning, Each Additional 30 Minutes99498 | 23 | $77 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-07-15
- Last updated
- 2020-02-26
- Certified
- 2020-02-26
Frequently asked questions
- What is Katherine Mark's NPI number?
- Katherine Mark's National Provider Identifier (NPI) is 1790949170, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Mark's specialty?
- Katherine Mark is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Katherine Mark located?
- Katherine Mark's practice location on file with NPPES is 1000 10th Ave, New York, NY 10019-1147.
- What is Katherine Mark's phone number?
- The practice phone number listed in the NPPES registry for Katherine Mark is (212) 523-4000.
- Does Katherine Mark accept Medicare?
- Katherine Mark is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Mark's NPI active?
- Yes — Katherine Mark's NPI (1790949170) is active in the NPPES registry as of the last update on 2020-02-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.