NPPES file of Aug 9, 2026

Sherry O'Brien, NURSE PRACTITIONER

Family Nurse Practitioner · Flagstaff, AZ

Sherry O'Brien, NURSE PRACTITIONER is a family nurse practitioner with a practice address in Flagstaff, Arizona, and NPI 1770958639, issued on Dec 3, 2015. Check the license (Arizona AP10273, as entered in NPPES) with the Arizona board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1770958639
Name
Sherry O'Brien
Credential
NURSE PRACTITIONER
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License numbers
AP10273 AZ
RN170043 AZ
Self-reported in NPPES; status is on the state search
Practice location
2000 S Thompson St, Flagstaff, AZ 86001
Phone
(928) 226-6400
Enumerated
Dec 3, 2015
Record last updated
Apr 24, 2019 (not updated in 7 years: call before relying on the address or phone)
Fax
(928) 226-6411
Medicaid ID
282324 AZ
Medicare enrollment
Enrolled (PECOS I20250815001323); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 2000 S Thompson St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Andrew Atiemo, M.D.Interventional Cardiology Physician1285678748
  2. Bryan Barker, DPTPhysical Therapist1942615778
  3. Martha Barlow, CNMNurse Practitioner1770846842
  4. Norria Brice, ACNP-BCAcute Care Nurse Practitioner1407131758
  5. Barbara Burggraaff, MDSleep Medicine (Otolaryngology) Physician1730112442
  6. Renzo Cataldo, M.D.Clinical Cardiac Electrophysiology Physician1174526677

Verify Sherry O'Brien in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Arizona board licenses this profession
    Search for license AP10273
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Arizona license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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91% fewer Medicare Part D claims than the average family nurse practitioner in 2024

117 Medicare Part D claims for 18 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Sherry O'Brien117
  2. Specialty average1,305

Most prescribed

  1. Zolpidem Tartrate36 claims
  2. Gabapentin19 claims
  3. Ropinirole Hcl18 claims
  4. Pramipexole Dihydrochloride13 claims
  5. Eszopiclone12 claims
  6. Trazodone Hcl12 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The practice group's MIPS final score for 2023 (Medicare payment program): 45.5 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score90.8
  2. Costout of 100 · 30%35.8
  3. Promoting interoperabilityout of 100 · 25%0.0
  4. Improvement activities20 of 40 points · 15%50.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $712.05

33 payments; by number, the most common kind was food and beverage; the largest payer was Inspire Medical Systems, Inc. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Sherry O'Brien$712.05
  2. Specialty average$650.95

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Auc Urologists LLCConway, SC

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Sherry O'Brien among 5,933 family nurse practitioner records in Arizona

Sherry O'Brien, NURSE PRACTITIONER is one of 5,933 family nurse practitioner records with a practice address in Arizona. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 31% of them.

  • NPI issued2015 · 31% of these records are older, 64% newer
  • In a Medicare fileYes · 77% of these records are
  • In the CMS Doctors and Clinicians fileYes · 59% of these records are
  • Graduated2017 · median 2019 among the 3,510 with a school on file
  • Record last updated2019 · 38% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

80 family nurse practitioner records list a practice address in Flagstaff

They are 80 of the 2,419 NPPES records with a practice address in Flagstaff, and 5,933 family nurse practitioner records in Arizona.

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Gretchen Alsip Vollbrecht, ARNPFlagstaff, AZ 860011629176052
  2. Susann Clinton, FNPFlagstaff, AZ 860011861544744
  3. Theresa Dowell, P.T.Flagstaff, AZ 860011417082553
  4. Denise Gomolak, N.P.Flagstaff, AZ 860011881705804
  5. Dee Ann Kaserer, FNPFlagstaff, AZ 860011275605982
  6. Beth Kennedy, NPFlagstaff, AZ 860011669544383
  7. Sherry Mace, FNPFlagstaff, AZ 860011033237904
  8. Mary Pasternacki, RN, FNP-CFlagstaff, AZ 860011275690331

Common questions

What is Sherry O'Brien, NURSE PRACTITIONER's NPI number?

Sherry O'Brien, NURSE PRACTITIONER's National Provider Identifier (NPI) is 1770958639, issued on Dec 3, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Sherry O'Brien, NURSE PRACTITIONER located?

The NPPES record lists a practice address at 2000 S Thompson St, Flagstaff, AZ, 86001. Phone: (928) 226-6400. Providers update this record themselves, so call before visiting.

How can I verify Sherry O'Brien, NURSE PRACTITIONER's license?

NPPES lists Arizona license number AP10273, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity only.

How much does Sherry O'Brien, NURSE PRACTITIONER prescribe under Medicare Part D?

In 2024, Sherry O'Brien, NURSE PRACTITIONER had 117 Medicare Part D claims for 18 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.

What is Sherry O'Brien, NURSE PRACTITIONER's MIPS final score?

The 2023 MIPS final score is 45.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.