Krishna Ratnam, M.D.
NPI 1306004940 · Nephrology Physician · New York, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Krishna Ratnam, M.D. is a Nephrology Physician provider in New York, NY (NPI 1306004940).
Provider details
- NPI number
- 1306004940
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 242120 (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
18 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
12 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) |
|---|---|---|
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 12 | $132 |
Typical Medicare-allowed amounts for these services range $132–$132 (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 · 44 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Furosemide | 177 | 77 |
| Amlodipine Besylate | 173 | 67 |
| Metoprolol Tartrate | 152 | 56 |
| Losartan Potassium | 128 | 48 |
| Carvedilol | 118 | 47 |
| Empagliflozinbrand: Jardiance | 106 | 36 |
| Potassium Chloride | 106 | 48 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-05-30
- Last updated
- 2021-11-30
Frequently asked questions
- What is Krishna Ratnam's NPI number?
- Krishna Ratnam's National Provider Identifier (NPI) is 1306004940, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Krishna Ratnam's specialty?
- Krishna Ratnam is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Krishna Ratnam located?
- Krishna Ratnam's practice location on file with NPPES is 340 E 93rd St, New York, NY 10128-5547.
- What is Krishna Ratnam's phone number?
- The practice phone number listed in the NPPES registry for Krishna Ratnam is (615) 260-3736.
- Does Krishna Ratnam accept Medicare?
- Krishna Ratnam is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Krishna Ratnam's NPI active?
- Yes — Krishna Ratnam's NPI (1306004940) is active in the NPPES registry as of the last update on 2021-11-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.