John Winters, MD
NPI 1366648693 · Hematology & Oncology Physician · Westbrook, ME
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Winters, MD is a Hematology & Oncology Physician provider in Westbrook, ME (NPI 1366648693).
Provider details
- NPI number
- 1366648693
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD20794 (ME)
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
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
7 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
12,856 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) |
|---|---|---|
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 1,820 | $8 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 1,737 | $9 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 1,428 | $10 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,101 | $125 |
| Measurement of Immunoglobulin Light Chains83521 | 802 | $17 |
| Injection of Additional New Drug Or Substance Into Vein96375 | 666 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 43 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lenalidomidebrand: Revlimid | 307 | 33 |
| Acyclovir | 207 | 59 |
| Hydroxyurea | 202 | 54 |
| Zanubrutinibbrand: Brukinsa | 168 | 22 |
| Acalabrutinib Maleatebrand: Calquence | 124 | 14 |
| Apixabanbrand: Eliquis | 123 | 35 |
| Ruxolitinib Phosphatebrand: Jakafi | 111 | 16 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$507 across 16 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
Additional practice locations (6)
- 2 Independence DrKennebunk, ME 04043-6078Phone: (207) 303-3300Fax: (207) 250-2144
- 105 Topsham Fair Mall Rd Unit 1Topsham, ME 04086-1773Phone: (207) 303-3300Fax: (207) 250-2137
- 15 Rock Row Ste 110Westbrook, ME 04092-4877Phone: (207) 303-3300
- 11 Rock Row Ste 150Westbrook, ME 04092-4877Phone: (207) 303-3300Fax: (207) 250-2139
- 11 Rock Row Ste 320Westbrook, ME 04092-4877Phone: (207) 303-3300Fax: (207) 250-2139
- 155 Borthwick Ave Ste CPortsmouth, NH 03801-7156Phone: (603) 828-0100Fax: (603) 828-0111
Registry dates
- Enumerated
- 2007-06-24
- Last updated
- 2026-04-20
- Certified
- 2026-04-20
Frequently asked questions
- What is John Winters's NPI number?
- John Winters's National Provider Identifier (NPI) is 1366648693, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Winters's specialty?
- John Winters is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is John Winters located?
- John Winters's practice location on file with NPPES is 11 Rock Row Ste 120, Westbrook, ME 04092-4877.
- What is John Winters's phone number?
- The practice phone number listed in the NPPES registry for John Winters is (207) 303-3300.
- Does John Winters accept Medicare?
- John Winters is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Winters's NPI active?
- Yes — John Winters's NPI (1366648693) is active in the NPPES registry as of the last update on 2026-04-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.