Marcus W. Fossmeyer, DNP, PMHNP
Psychiatric/Mental Health Nurse Practitioner · Mesa, AZ
Marcus W. Fossmeyer, DNP, PMHNP is a psychiatric/mental health nurse practitioner with a practice address in Mesa, Arizona, and NPI 1447773478, issued on Jul 21, 2017. Check the license (Arizona AP10434, as entered in NPPES) with the Arizona board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marcus W. Fossmeyer
- Credential
- DNP, PMHNP
- Primary taxonomy
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License numbers
- AP10434 AZ
RN175917 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 2120 W Guadalupe RD Ste 6, Mesa, AZ 85202
- Phone
- (602) 230-7373
- Enumerated
- Jul 21, 2017
- Record last updated
- Jul 10, 2026
- Fax
- (480) 628-8577
- Medicare enrollment
- Enrolled (PECOS I20170831003308); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatric/mental health nurse practitioner records → All 1,887 in Arizona → Look up another NPI →
Also registered at 2120 W Guadalupe RD Ste 6
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Mollie Glovinsky, DNP, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1902527336
- Branden Haws, LPCProfessional Counselor1730944463
- Karen House, LPCMental Health Counselor1366375990
Verify Marcus W. Fossmeyer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Arizona board licenses this profession
Search for license AP10434Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
26% more Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024
1,141 Medicare Part D claims for 81 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D. Brand-name drugs were 2% of claims.
Most prescribed
- Clonazepam92 claims
- Diazepam86 claims
- Aripiprazole70 claims
- Trazodone Hcl51 claims
- Fluoxetine Hcl47 claims
- Dextroamphetamine-Amphetamine43 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: $146.15
3 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Pharmaceuticals, Inc. The 23,362 providers of this specialty with any payment received $1,027.77 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- Denova Collaborative Health, LLCPhoenix, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marcus W. Fossmeyer among 1,887 psychiatric/mental health nurse practitioner records in Arizona
Marcus W. Fossmeyer, DNP, PMHNP is one of 1,887 psychiatric/mental health nurse practitioner records with a practice address in Arizona. 73% 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 31% of them.
- NPI issued2017 · 31% of these records are older, 65% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2017 · median 2020 among the 1,079 with a school on file
- Record last updated2026 · 23% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
154 psychiatric/mental health nurse practitioner records list a practice address in Mesa
They are 154 of the 9,151 NPPES records with a practice address in Mesa, and 1,887 psychiatric/mental health nurse practitioner records in Arizona.
All 1,887 in Arizona → Every provider in Mesa → Psychiatric/Mental Health Nurse Practitioner nationwide →
The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes
- Marianne Barker, ARNPMesa, AZ 852021710930987
- Catherine Bradway, MSN, APRN, BCMesa, AZ 852021831128016
- Princess Darko-Amoako, PMHNPMesa, AZ 852021043775547
- Michelle Gilreath, PMHNP-BCMesa, AZ 852021679025944
- Rebecca Green, N.P.Mesa, AZ 852021982714416
- Francis KahigaMesa, AZ 852021477185759
- Amanda Keenhold, DNP, PMHNPMesa, AZ 852021013248699
- Elizabeth Mazhuvencherry, PMHNPMesa, AZ 852021952928061
Common questions
What is Marcus W. Fossmeyer, DNP, PMHNP's NPI number?
Marcus W. Fossmeyer, DNP, PMHNP's National Provider Identifier (NPI) is 1447773478, issued on Jul 21, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Marcus W. Fossmeyer, DNP, PMHNP located?
The NPPES record lists a practice address at 2120 W Guadalupe RD Ste 6, Mesa, AZ, 85202. Phone: (602) 230-7373. Providers update this record themselves, so call before visiting.
How can I verify Marcus W. Fossmeyer, DNP, PMHNP's license?
NPPES lists Arizona license number AP10434, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity only.
How much does Marcus W. Fossmeyer, DNP, PMHNP prescribe under Medicare Part D?
In 2024, Marcus W. Fossmeyer, DNP, PMHNP had 1,141 Medicare Part D claims for 81 beneficiaries; the average among psychiatric/mental health nurse practitioner prescribers was 906. 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.
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.