NPPES file of Aug 9, 2026

Christine Grassman, NP

Family Nurse Practitioner · Sierra Vista, AZ

Christine Grassman, NP is a family nurse practitioner with a practice address in Sierra Vista, Arizona, and NPI 1689111817, issued on Jan 25, 2017. Check the license (Arizona AP8680, 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1689111817
Name
Christine Grassman
Credential
NP
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
AP8680 AZ
Self-reported in NPPES; status is on the state search
Practice location
155 Calle Portal Ste 300, Sierra Vista, AZ 85635
Phone
(520) 459-3011
Enumerated
Jan 25, 2017
Record last updated
Mar 7, 2023
Fax
(520) 364-4261
Medicare enrollment
Enrolled (PECOS I20180523002741); accepts Medicare assignment
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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8 nearest family nurse practitioner records → All 5,933 in Arizona → Look up another NPI →

Also registered at 155 Calle Portal Ste 300

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

  1. Sherri Arenas, LPCProfessional Counselor1386187680
  2. Jaimie CallisonMarriage & Family Therapist1164129466
  3. Jamie Fitzpatrick, APRN-RNPFamily Nurse Practitioner1467145904
  4. Danielle Green, DMDDentist1376100594
  5. Chelsey Housley, RDRegistered Dietitian1467954594
  6. Rebecca Lamas, FNPFamily Nurse Practitioner1467972133

Verify Christine Grassman 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 AP8680    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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93% more Medicare Part D claims than the average family nurse practitioner in 2024

2,522 Medicare Part D claims for 287 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 24 claims were for opioids.

  1. Christine Grassman2,522
  2. Specialty average1,305

Most prescribed

  1. Lisinopril115 claims
  2. Atorvastatin Calcium102 claims
  3. Albuterol Sulfate Hfa93 claims
  4. Levothyroxine Sodium91 claims
  5. Gabapentin88 claims
  6. Amlodipine Besylate80 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.

Industry payments in 2024: $668.09

7 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. 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. Christine Grassman$668.09
  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. Chiricahua Community Health Centers IncSierra Vista, AZ

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

Christine Grassman among 5,933 family nurse practitioner records in Arizona

Christine Grassman, NP 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 2017, is newer than 41% of them.

  • NPI issued2017 · 41% of these records are older, 52% newer
  • In a Medicare fileYes · 77% of these records are
  • In the CMS Doctors and Clinicians fileYes · 59% of these records are
  • Graduated2015 · median 2019 among the 3,510 with a school on file
  • Record last updated2023 · 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).

46 family nurse practitioner records list a practice address in Sierra Vista

They are 46 of the 801 NPPES records with a practice address in Sierra Vista, and 5,933 family nurse practitioner records in Arizona.

All 5,933 in Arizona → Every provider in Sierra Vista → Family Nurse Practitioner nationwide →

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Pamela Enright, FNP-CSierra Vista, AZ 856351548436603
  2. Laura Goethe, FNP-BCSierra Vista, AZ 856351649575580
  3. Erick Haldorson, FNPSierra Vista, AZ 856351144338039
  4. Garrick Haymore, FNPSierra Vista, AZ 856351972978328
  5. Sherry Hron, APRN FNP-BCSierra Vista, AZ 856351285057117
  6. Ellen Lintner, FNP-CSierra Vista, AZ 856351194808857
  7. Dixie Millican, FNPSierra Vista, AZ 856351760781017
  8. John Penunuri, FNP-CSierra Vista, AZ 856351134553142

Common questions

What is Christine Grassman, NP's NPI number?

Christine Grassman, NP's National Provider Identifier (NPI) is 1689111817, issued on Jan 25, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Christine Grassman, NP located?

The NPPES record lists a practice address at 155 Calle Portal Ste 300, Sierra Vista, AZ, 85635. Phone: (520) 459-3011. Providers update this record themselves, so call before visiting.

How can I verify Christine Grassman, NP's license?

NPPES lists Arizona license number AP8680, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity only.

How much does Christine Grassman, NP prescribe under Medicare Part D?

In 2024, Christine Grassman, NP had 2,522 Medicare Part D claims for 287 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.