Fred Ko, MD
NPI 1558560110 · Geriatric Medicine (Internal Medicine) Physician · New York, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Fred Ko, MD is a Geriatric Medicine (Internal Medicine) Physician provider in New York, NY (NPI 1558560110).
Provider details
- NPI number
- 1558560110
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 042.0019234 (VT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
31 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 | 31 | $128 |
Typical Medicare-allowed amounts for these services range $128–$128 (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.
Practice location
Mailing address
Additional practice locations (2)
- 111 Colchester AveBurlington, VT 05401-1473Phone: (802) 847-0000Fax: (802) 847-6254
- 353 Blair Park RdWilliston, VT 05495-7530Phone: (802) 847-1470
Registry dates
- Enumerated
- 2007-07-13
- Last updated
- 2026-01-29
- Certified
- 2026-01-29
Frequently asked questions
- What is Fred Ko's NPI number?
- Fred Ko's National Provider Identifier (NPI) is 1558560110, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Fred Ko's specialty?
- Fred Ko is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Fred Ko located?
- Fred Ko's practice location on file with NPPES is 1 Gustave L Levy Pl, New York, NY 10029-6504.
- What is Fred Ko's phone number?
- The practice phone number listed in the NPPES registry for Fred Ko is (212) 241-4141.
- Does Fred Ko accept Medicare?
- Fred Ko is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Fred Ko's NPI active?
- Yes — Fred Ko's NPI (1558560110) is active in the NPPES registry as of the last update on 2026-01-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.