Margarita Barrientes, NP
NPI 1649626250 · Nurse Practitioner · Ann Arbor, MI
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margarita Barrientes, NP is a Nurse Practitioner provider in Ann Arbor, MI (NPI 1649626250).
Provider details
- NPI number
- 1649626250
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 4704234191 (MI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 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.
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 |
|---|---|---|
| Hydralazine Hcl | 23 | — |
| Isosorbide Dinitrate | 21 | — |
| Sacubitril/Valsartanbrand: Entresto | 16 | — |
| Apixabanbrand: Eliquis | 15 | — |
| Torsemide | 15 | 11 |
| Empagliflozinbrand: Jardiance | 13 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude 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.
Practice location
Mailing address
Additional practice locations (1)
- 1500 E Medical Center DrFloor 3 Cardiovascular CenterAnn Arbor, MI 48109-5856Phone: (888) 287-1082
Registry dates
- Enumerated
- 2016-05-12
- Last updated
- 2025-12-03
- Certified
- 2025-12-03
Frequently asked questions
- What is Margarita Barrientes's NPI number?
- Margarita Barrientes's National Provider Identifier (NPI) is 1649626250, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margarita Barrientes's specialty?
- Margarita Barrientes is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Margarita Barrientes located?
- Margarita Barrientes's practice location on file with NPPES is 1500 E Medical Center Dr, Ann Arbor, MI 48109-5000.
- What is Margarita Barrientes's phone number?
- The practice phone number listed in the NPPES registry for Margarita Barrientes is (734) 936-4000.
- Does Margarita Barrientes accept Medicare?
- Margarita Barrientes is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margarita Barrientes's NPI active?
- Yes — Margarita Barrientes's NPI (1649626250) is active in the NPPES registry as of the last update on 2025-12-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.