Katherine Mager, MD
NPI 1376825646 · Gynecologic Oncology Physician · Buffalo, NY
Enrolled with Medicare as Practitioner - Gynecological Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Mager, MD is a Gynecologic Oncology Physician provider in Buffalo, NY (NPI 1376825646).
Provider details
- NPI number
- 1376825646
- Entity type
- Individual
- Primary specialty
- Gynecologic Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
14 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
115 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 49 | $92 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 35 | $92 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 19 | $74 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 12 | $126 |
Typical Medicare-allowed amounts for these services range $74–$126 (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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$218 across 2 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 (3)
- 319 S Manning Blvd Ste 301Albany, NY 12208-1743Phone: (518) 458-1390Fax: (518) 694-8872
- 1275 York AveNew York, NY 10065-6007Phone: (646) 888-3217
- 1275 York AveNew York, NY 10065-6007Phone: (646) 888-3217
Registry dates
- Enumerated
- 2011-09-13
- Last updated
- 2026-05-15
- Certified
- 2026-05-15
Frequently asked questions
- What is Katherine Mager's NPI number?
- Katherine Mager's National Provider Identifier (NPI) is 1376825646, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Mager's specialty?
- Katherine Mager is listed in the NPPES registry with a primary specialty of Gynecologic Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Katherine Mager located?
- Katherine Mager's practice location on file with NPPES is Elm and Carlton Streets, Buffalo, NY 14263.
- What is Katherine Mager's phone number?
- The practice phone number listed in the NPPES registry for Katherine Mager is (716) 845-2300.
- Does Katherine Mager accept Medicare?
- Katherine Mager is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Mager's NPI active?
- Yes — Katherine Mager's NPI (1376825646) is active in the NPPES registry as of the last update on 2026-05-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.