Vignesh Narayanan, M.D
NPI 1073632675 · Hematology & Oncology Physician · Denver, CO
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Vignesh Narayanan, M.D is a Hematology & Oncology Physician provider in Denver, CO (NPI 1073632675).
Provider details
- NPI number
- 1073632675
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Male
- Sole proprietor
- No
- License
- 45677 (CO)
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 tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
349 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 | 143 | $129 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 74 | $181 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 49 | $220 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 45 | $91 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 38 | $167 |
Typical Medicare-allowed amounts for these services range $91–$220 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ondansetron Hcl | 24 | 16 |
| Apixabanbrand: Eliquis | 18 | — |
| Anastrozole | 17 | — |
| Hydroxyurea | 16 | — |
| Prochlorperazine Maleate | 15 | 12 |
| Acyclovir | 14 | — |
| Lenalidomide | 13 | — |
| Tamoxifen Citrate | 13 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$257 across 4 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
Registry dates
- Enumerated
- 2007-03-28
- Last updated
- 2023-05-04
- Certified
- 2023-05-04
Frequently asked questions
- What is Vignesh Narayanan's NPI number?
- Vignesh Narayanan's National Provider Identifier (NPI) is 1073632675, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Vignesh Narayanan's specialty?
- Vignesh Narayanan is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Vignesh Narayanan located?
- Vignesh Narayanan's practice location on file with NPPES is 100 Cook St Ste 202, Denver, CO 80206-5328.
- What is Vignesh Narayanan's phone number?
- The practice phone number listed in the NPPES registry for Vignesh Narayanan is (720) 516-9413.
- Does Vignesh Narayanan accept Medicare?
- Vignesh Narayanan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Vignesh Narayanan's NPI active?
- Yes — Vignesh Narayanan's NPI (1073632675) is active in the NPPES registry as of the last update on 2023-05-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.