What is Gregory Westin's NPI number?

Gregory Westin's National Provider Identifier (NPI) is 1659676146, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Gregory Westin's specialty?

Gregory Westin is listed in the NPPES registry with a primary specialty of Vascular Surgery Physician (Allopathic & Osteopathic Physicians).

Where is Gregory Westin located?

Gregory Westin's practice location on file with NPPES is 1801 N Senate Blvd, Indianapolis, IN 46202-1184.

What is Gregory Westin's phone number?

The practice phone number listed in the NPPES registry for Gregory Westin is (317) 962-0280.

Does Gregory Westin accept Medicare?

Gregory Westin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Gregory Westin's NPI active?

Yes — Gregory Westin's NPI (1659676146) is active in the NPPES registry as of the last update on 2023-08-07.

IndividualActiveAccepts Medicare

Gregory Westin, MD

NPI 1659676146 · Vascular Surgery Physician · Indianapolis, IN

Gregory Westin, MD is a Vascular Surgery Physician provider in Indianapolis, IN (NPI 1659676146).

Provider details

NPI number: 1659676146
Entity type: Individual
Primary specialty: Vascular Surgery PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: No
License: 285937 (NY)

Practice location

1801 N Senate Blvd

Mpc2, Suite 3500

Indianapolis, IN 46202-1184

Phone: (317) 962-0280

Fax: (347) 394-2246

Street-level locationGet directions

Mailing address

250 N Shadeland Ave

Indianapolis, IN 46219-4959

Specialties & taxonomies

Vascular Surgery PhysicianPrimary2086S0129XLicense 01082541A (IN)
Allopathic & Osteopathic Physicians
Vascular Surgery Physician2086S0129XLicense 285937 (NY)
Allopathic & Osteopathic Physicians

Additional practice locations (1)

2651 E Discovery Pkwy
Bloomington, IN 47408-9059
Phone: (812) 355-6900
Fax: (812) 339-1292

Enrolled with Medicare as Practitioner - Vascular Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(75/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure25% of score
15 yrs in NPPES registry
Profile completeness25% of score
100% of core fields populated
Practice footprint15% of score
2 documented practice locations
Medicare service volume (vs. specialty peers)25% of score
719 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 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)
Ultrasound Study of Arm Or Leg Veins With Compression and Maneuvers93970	101	$30
Ultrasound Study of Arm and Leg Arteries93922	82	$11
Ultrasound of Both Sides of Head and Neck Blood Flow93880	78	$35
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	65	$118
Ultrasound Study of One Arm Or Leg Veins With Compression and Maneuvers93971	64	$19
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

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Atorvastatin Calcium	40	15
Cilostazol	37	13
Clopidogrel Bisulfatebrand: Clopidogrel	28	11
Rivaroxabanbrand: Xarelto	24	—
Gabapentin	18	—
Apixabanbrand: Eliquis	12	—

These counts cover prescriptions paid through Medicare Part D in 2024 — they include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$173 across 5 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.

Enumerated: 2011-01-14
Last updated: 2023-08-07
Certified: 2023-08-07

Frequently asked questions

What is Gregory Westin's NPI number?: Gregory Westin's National Provider Identifier (NPI) is 1659676146, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Gregory Westin's specialty?: Gregory Westin is listed in the NPPES registry with a primary specialty of Vascular Surgery Physician (Allopathic & Osteopathic Physicians).
Where is Gregory Westin located?: Gregory Westin's practice location on file with NPPES is 1801 N Senate Blvd, Indianapolis, IN 46202-1184.
What is Gregory Westin's phone number?: The practice phone number listed in the NPPES registry for Gregory Westin is (317) 962-0280.
Does Gregory Westin accept Medicare?: Gregory Westin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Gregory Westin's NPI active?: Yes — Gregory Westin's NPI (1659676146) is active in the NPPES registry as of the last update on 2023-08-07.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

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)
Ultrasound Study of Arm Or Leg Veins With Compression and Maneuvers93970	101	$30
Ultrasound Study of Arm and Leg Arteries93922	82	$11
Ultrasound of Both Sides of Head and Neck Blood Flow93880	78	$35
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	65	$118
Ultrasound Study of One Arm Or Leg Veins With Compression and Maneuvers93971	64	$19
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

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Atorvastatin Calcium	40	15
Cilostazol	37	13
Clopidogrel Bisulfatebrand: Clopidogrel	28	11
Rivaroxabanbrand: Xarelto	24	—
Gabapentin	18	—
Apixabanbrand: Eliquis	12	—

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$173 across 5 records (Open Payments 2024)

Provider details

Practice location

Mailing address

Specialties & taxonomies

Additional practice locations (1)

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Transparency — industry payments

Registry dates

Frequently asked questions

Specialties & taxonomies

Additional practice locations (1)

Frequently asked questions

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Transparency — industry payments