What is Ryan Greene's NPI number?

Ryan Greene's National Provider Identifier (NPI) is 1649723511, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Ryan Greene's specialty?

Ryan Greene is listed in the NPPES registry with a primary specialty of Pediatric Cardiology Physician (Allopathic & Osteopathic Physicians).

Where is Ryan Greene located?

Ryan Greene's practice location on file with NPPES is 1500 E Medical Center Dr, Ann Arbor, MI 48109-5000.

What is Ryan Greene's phone number?

The practice phone number listed in the NPPES registry for Ryan Greene is (734) 936-4000.

Does Ryan Greene accept Medicare?

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

Is Ryan Greene's NPI active?

Yes — Ryan Greene's NPI (1649723511) is active in the NPPES registry as of the last update on 2024-04-22.

IndividualActiveAccepts Medicare

Ryan Greene, MD

NPI 1649723511 · Pediatric Cardiology Physician · Ann Arbor, MI

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

Ryan Greene, MD is a Pediatric Cardiology Physician provider in Ann Arbor, MI (NPI 1649723511).

Provider details

NPI number: 1649723511
Entity type: Individual
Primary specialty: Pediatric Cardiology PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: No
License: 4301110847 (MI)

Specialties & taxonomies

Pediatric Cardiology PhysicianPrimary2080P0202XLicense 4301510034 (MI)
Allopathic & Osteopathic Physicians
Pediatric Cardiology Physician2080P0202XLicense 4301110847 (MI)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(81/100 index)

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

Registry tenure38% of score
9 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
3 documented practice locations

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.

Practice location

1500 E Medical Center Dr

Ann Arbor, MI 48109-5000

Phone: (734) 936-4000

Street-level locationGet directions

More MI providers

Mailing address

3621 S State St

Ann Arbor, MI 48108-1633

Additional practice locations (2)

1105 Sixth St
Traverse City, MI 49684-2345
Phone: (231) 935-6370
2450 Riverside Ave Bldg M663
Minneapolis, MN 55454-1450
Phone: (612) 626-2958
Fax: (612) 624-8782

Enumerated: 2016-07-27
Last updated: 2024-04-22
Certified: 2024-04-22

Frequently asked questions

What is Ryan Greene's NPI number?: Ryan Greene's National Provider Identifier (NPI) is 1649723511, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Ryan Greene's specialty?: Ryan Greene is listed in the NPPES registry with a primary specialty of Pediatric Cardiology Physician (Allopathic & Osteopathic Physicians).
Where is Ryan Greene located?: Ryan Greene's practice location on file with NPPES is 1500 E Medical Center Dr, Ann Arbor, MI 48109-5000.
What is Ryan Greene's phone number?: The practice phone number listed in the NPPES registry for Ryan Greene is (734) 936-4000.
Does Ryan Greene accept Medicare?: Ryan Greene is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Ryan Greene's NPI active?: Yes — Ryan Greene's NPI (1649723511) is active in the NPPES registry as of the last update on 2024-04-22.

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