NPI registry status
Active
2026 NPPES data Geriatric Medicine (Internal Medicine) Physician NPI 1558560110 MD
Verify on CMS → Fred Ko, MD
Geriatric Medicine (Internal Medicine) Physician in New York, New York.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 4,215 in Geriatric Medicine (Internal Medicine) Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
50
Medicare Part D claims · Geriatric Medicine (Internal Medicine) Physician avg: 4K
What the federal data shows
Fred Ko, MD filed 50 Medicare Part D claims in 2024 as a Geriatric Medicine (Internal Medicine) Physician in New York, New York.
- 50
- Part D claims, 2024
- Likely
- board-certified (heuristic)
- ≥0th
- pct by Part D claim volume (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Fred Ko, MD
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1558560110), first enumerated 07/13/2007.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 50 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
2 CMS Care Compare hospital affiliations on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- State context
State board disciplinary context
New York statewide board action statistics are published annually — these figures describe aggregate state activity, not Fred Ko, MD's individual license status. Verify directly with the state medical board.
Source: NYSBPMC annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1558560110 · Geriatric Medicine (Internal Medicine) Physician
NPI-10 · ENUM-MID · TAX-NARROW · RX-TRACE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1558560110
- ENUM-MID 2007
- TAX-NARROW 4,215
- RX-TRACE 50
- BOOK-THIN 493 in New York
- PHOTO-ENUM Hassan Elsiddig, M.D. · 2007
Fred Ko, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
50 ≥ 0th percentile 0% of 1,416,883 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
✓
Board certification likely (heuristic, not verified)
Fred Ko, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Fred Ko, MD?
Quality data not reportedPrimary specialty
Geriatric Medicine (Internal Medicine) Physician
Medicare Part D claims
50 99% vs specialty avg
Specialty distribution in New York
How Geriatric Medicine (Internal Medicine) Physician compares to other specialties among New York providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Geriatric Medicine (Internal Medicine) Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1558560110 |
|---|---|
| Specialty | Geriatric Medicine (Internal Medicine) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 07/13/2007 |
Hospital and facility affiliations
Facilities where Fred Ko, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Icahn School OF Medicine AT Mount Sinai
New York, NY
University OF Vermont Medical Center Inc
Burlington, VT
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - New York NYSBPMC 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~100K New York medical licensees in 2023 - they are NOT specific to Fred Ko, MD. To verify Fred Ko, MD's current license status, search the NYSBPMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
312
Total board actions, New York 2023
Across 302 cases
3.12
Actions per 1,000 licensees
New York statewide rate
probation
Most common action type
89 cases
NYSBPMC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the New York disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
50
Total Claims
$13K
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 91.633
- Total Day Supply
- 2,630
- Generic Drug Cost
- $1K
Patient Demographics
- Average Patient Age
- 92.3 years
- Avg HCC Risk Score
- 2.28
More Geriatric Medicine (Internal Medicine) Physician in NY →
All providers in New York →
Compare specialties →
Geriatric Medicine (Internal Medicine) Physician Overview
How Fred Ko, MD fits within the Geriatric Medicine (Internal Medicine) Physician landscape nationally.
4,215
Geriatric Medicine (Internal Medicine) Physician Providers in US
52
States with Geriatric Medicine (Internal Medicine) Physician
4,420
Avg Claims per Provider
Fred Ko, MD's 50 claims are below the specialty average of 4,420.
Nationwide Geriatric Medicine (Internal Medicine) Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Ko, both outside New York so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Geriatric Medicine (Internal Medicine) Physician Providers in New York
Other clinicians with the same primary specialty enrolled in New York, drawn from the same CMS NPPES roster as Ko.
One of 493 Geriatric Medicine (Internal Medicine) Physician providers enrolled in New York, 5 are shown here.
Frequently Asked Questions
What is Fred Ko, MD's specialty? ▼
Fred Ko, MD specializes in Geriatric Medicine (Internal Medicine) Physician and practices in New York, New York. Credentials: MD.
How much does Fred Ko, MD prescribe under Medicare Part D? ▼
In 2024, Fred Ko, MD wrote 50 Medicare Part D claims totaling $13K in drug costs for N/A beneficiaries.
Where is Fred Ko, MD located? ▼
Fred Ko, MD is located at 1 GUSTAVE L LEVY PL, New York, NY, 10029. Phone: (212) 241-4141.
What is Fred Ko, MD's NPI number? ▼
Fred Ko, MD's National Provider Identifier (NPI) is 1558560110, issued on 07/13/2007.
How many Geriatric Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 4,215 Geriatric Medicine (Internal Medicine) Physician providers across 52 states in the US. The average Geriatric Medicine (Internal Medicine) Physician provider writes 4,420 Medicare Part D claims per year.
Does Fred Ko, MD accept Medicare? ▼
Fred Ko, MD appears in CMS Medicare data with 50 Part D claims and N/A Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Fred Ko, MD's credentials? ▼
Fred Ko, MD's NPI is 1558560110 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.