Michael Grant, MD
NPI 1821451238 · Medical Oncology Physician · New Haven, CT
Enrolled with Medicare as Practitioner - Hematology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Grant, MD is a Medical Oncology Physician provider in New Haven, CT (NPI 1821451238).
Provider details
- NPI number
- 1821451238
- Entity type
- Individual
- Primary specialty
- Medical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 72107 (CT)
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
10 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
1,460 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 High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 368 | $153 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 321 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 213 | $104 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 115 | $9 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 108 | $8 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 37 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 112 | 36 |
| Enzalutamidebrand: Xtandi | 72 | — |
| Prochlorperazine Maleate | 68 | 53 |
| Apixabanbrand: Eliquis | 65 | 17 |
| Abiraterone Acetate | 61 | — |
| Hydroxyurea | 47 | 14 |
| Oxycodone Hcl | 46 | 22 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$6,841 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
- 2016-04-02
- Last updated
- 2022-07-21
- Certified
- 2022-07-21
Frequently asked questions
- What is Michael Grant's NPI number?
- Michael Grant's National Provider Identifier (NPI) is 1821451238, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Grant's specialty?
- Michael Grant is listed in the NPPES registry with a primary specialty of Medical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Grant located?
- Michael Grant's practice location on file with NPPES is 333 Cedar St # 205, New Haven, CT 06510-3206.
- What is Michael Grant's phone number?
- The practice phone number listed in the NPPES registry for Michael Grant is (203) 688-4242.
- Does Michael Grant accept Medicare?
- Michael Grant is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Grant's NPI active?
- Yes — Michael Grant's NPI (1821451238) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.