Joan Louise Machamer, AGACNP-BC
Acute Care Nurse Practitioner · Tucson, AZ
Joan Louise Machamer, AGACNP-BC is an acute care nurse practitioner with a practice address in Tucson, Arizona, and NPI 1497292668, issued on Jan 26, 2017. Check the license (Arizona RN137245, as entered in NPPES) with the Arizona board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Joan Louise Machamer
- Credential
- AGACNP-BC
- Primary taxonomy
- Acute Care Nurse Practitioner 363LA2100X
- License number
- RN137245 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 1501 N Campbell Ave, Tucson, AZ 85724
- Phone
- (520) 694-0111
- Enumerated
- Jan 26, 2017
- Record last updated
- Jan 26, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20170410001647); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest acute care nurse practitioner records → All 645 in Arizona → Look up another NPI →
Also registered at 1501 N Campbell Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Joan Louise Machamer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Arizona board licenses this profession
Search for license RN137245Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
51% fewer Medicare Part D claims than the average acute care nurse practitioner in 2024
289 Medicare Part D claims for 78 beneficiaries, against an average of 594 among the 13,133 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Gabapentin39 claims
- Trazodone Hcl39 claims
- Pramipexole Dihydrochloride38 claims
- Modafinil31 claims
- Azelastine Hcl22 claims
- Pregabalin14 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 MIPS final score for 2023 (Medicare payment program): 97.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Banner-University Medical GroupTucson, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joan Louise Machamer among 645 acute care nurse practitioner records in Arizona
Joan Louise Machamer, AGACNP-BC is one of 645 acute care nurse practitioner records with a practice address in Arizona. 85% 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 35% of them.
- NPI issued2017 · 35% of these records are older, 57% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2016 · median 2018 among the 465 with a school on file
- Record last updated2017 · 34% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2100X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Acute Care Nurse Practitioner providers in Arizona
There are 645 acute care nurse practitioner records in Arizona.
All 645 in Arizona → Every provider in Tucson → Acute Care Nurse Practitioner nationwide →
The 8 acute care nurse practitioner records with the nearest ZIP codes
- Julie Bryan, ACNP-BCTucson, AZ 857241710289889
- Laura Costanza, NPTucson, AZ 857241578000147
- Sandra Garcia, ACNPC-AGTucson, AZ 857241427553098
- Katherine Huls, NPTucson, AZ 857241679012017
- Jeremiah Ramirez-Damilig, DNPTucson, AZ 857231457830192
- Amanda Sepulveda, AGACNPTucson, AZ 857231982394011
- Windy Tulino, ACNP-AGTucson, AZ 857231265978399
- Kyle FecteauTucson, AZ 857211811652480
Common questions
What is Joan Louise Machamer, AGACNP-BC's NPI number?
Joan Louise Machamer, AGACNP-BC's National Provider Identifier (NPI) is 1497292668, issued on Jan 26, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Joan Louise Machamer, AGACNP-BC located?
The NPPES record lists a practice address at 1501 N Campbell Ave, Tucson, AZ, 85724. Phone: (520) 694-0111. Providers update this record themselves, so call before visiting.
How can I verify Joan Louise Machamer, AGACNP-BC's license?
NPPES lists Arizona license number RN137245, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity only.
How much does Joan Louise Machamer, AGACNP-BC prescribe under Medicare Part D?
In 2024, Joan Louise Machamer, AGACNP-BC had 289 Medicare Part D claims for 78 beneficiaries; the average among acute care nurse practitioner prescribers was 594. Part D covers Medicare prescriptions only.
What is Joan Louise Machamer, AGACNP-BC's MIPS final score?
The 2023 MIPS final score is 97.6 of 100. 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.