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TAMMY MCMILLION PMHNP-BC
NPI 1245736305
Nurse Practitioner - Psychiatric/Mental Health in Phoenix, AZ

Active since April 05, 2018PECOS EnrolledAccepts Medicare Assignment
16620 N 40TH ST STE E-1, PHOENIX, AZ 85032(602) 464-9576(602) 626-8901 Get Directions Write a Review

NPPES record last updated: November 14, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Nov 14, 2025, Dec 30, 2020, Feb 13, 2020 and 1 more (4 updates tracked since 2020).

About Tammy Mcmillion Pmhnp-bc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

TAMMY MCMILLION PMHNP-BC (NPI 1245736305) is an individual psychiatric/mental health provider in Phoenix, Arizona, licensed in Arizona (AP11165) and active in the NPI registry since April 2018. She is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of Other (2017).

NPPES Registry Identity

NPI1245736305
Entity TypeIndividualFemale
Primary Taxonomy363LP0808X
Provider Legal NameTAMMY MCMILLIONCredential: PMHNP-BC
Location Address16620 N 40TH ST STE E-1Phoenix, AZ 85032-3348
Mailing Address4531 N 16th St Ste 114Phoenix, AZ 85016-5344 · (602) 266-8700 · Fax (602) 296-0404
Phone(602) 464-9576
Fax(602) 626-8901
Sole ProprietorNo
Medical School CMSOtherGraduated 2017
Enumeration DateApril 5, 2018
Last NPPES UpdateNovember 14, 20254 updates tracked since enumeration
NPPES CertifiedNovember 14, 2025
✔ NPI 1245736305 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
Licenses✔ Licensed in AZ · AP11165✔ Licensed in CO · C-APN.0004021-C-NP
16620 N 40TH ST STE E-1, Phoenix, AZ 85032
Open in Google Maps ↗

Secondary Practice Locations 3

Location 12450 E Guadalupe Rd Ste 103Gilbert, AZ 85234-5116 · Phone (480) 907-6818 · Fax (480) 907-5181
Location 26535 W Camelback Rd Ste 4Phoenix, AZ 85033-1608 · Phone (623) 231-5535 · Fax (623) 231-5978
Location 318555 N 79th Ave Ste D107Glendale, AZ 85308-6040 · Phone (623) 777-3477 · Fax (623) 777-3478

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Blue Cross Blue Shield of Arizona, Cigna HealthCare of Arizona, Inc and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Tammy Mcmillion Pmhnp-bc is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2062776289
PECOS Enrollment IDI20230306000720
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show Tammy Mcmillion reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

A Still Mind Behavioral Health LLC
10.0 mi
Psychiatric/Mental Health
32635 N 40TH PL
Cave Creek, AZ 85331
  • Reassigned Medicare billing, Arizona enrollment
NPI 1649978974 (810) 623-0680
Boulder Care Provider Group PA
996 mi
Addiction Medicine
111 SW NAITO PKWY STE 200
Portland, OR 97204
  • Reassigned Medicare billing, Ohio enrollment
  • 162 clinicians in this Medicare group
NPI 1649838590 (888) 316-0451
Thrive Counseling LLC
1,861 mi
Mental Health
1000 JEFFERSON ST STE 2C
Lynchburg, VA 24504
  • Reassigned Medicare billing, Arizona enrollment
  • 33 clinicians in this Medicare group
NPI 1215181300 (855) 284-7483

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 85032 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$85.89 typical visit price
range $55.44 – $168.60
Typical copayment $21.47 (range $13.86 – $42.15)
Most-billed visit code 99203
Established Patient
$98.00 typical visit price
range $17.72 – $137.41
Typical copayment $24.50 (range $4.43 – $34.35)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

GINA POLLINA PMHNP
Nurse Practitioner (Psychiatric/Mental Health)
16620 N 40TH ST STE E-1
PHOENIX, AZ 85032
Maricopa County (602) 464-9576
MARTIN H NEWMAN MD
Psychiatry & Neurology (Psychiatry)
16620 N 40TH ST STE E-1
PHOENIX, AZ 85032
Maricopa County (602) 464-9576
PAUL CHRISTOPHER BOULWARE M.D.
Psychiatry & Neurology (Psychiatry)
16620 N 40TH ST STE E-1
PHOENIX, AZ 85032
Maricopa County (602) 464-9576
BETH PEMBROKE
Nurse Practitioner (Psychiatric/Mental Health)
16620 N 40TH ST STE E-1
PHOENIX, AZ 85032
Maricopa County (602) 464-9576
ASHWIN M. REDDY M.D.
Psychiatry & Neurology (Addiction Psychiatry)
16620 N 40TH ST STE E-1
PHOENIX, AZ 85032
Maricopa County (602) 464-9576

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Tammy Mcmillion's NPI number?

The NPI number for Tammy Mcmillion is 1245736305. It was assigned to this individual provider in the NPPES registry on April 5, 2018.

Where is Tammy Mcmillion located?

Tammy Mcmillion practices at 16620 N 40th St Ste E-1, Phoenix, AZ 85032. The listed phone number is (602) 464-9576.

What is Tammy Mcmillion's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Is Tammy Mcmillion enrolled in Medicare?

Yes. Tammy Mcmillion is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Tammy Mcmillion's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tammy Mcmillion reassigns Medicare benefits to 3 organizations: A Still Mind Behavioral Health LLC (Cave Creek, AZ), Boulder Care Provider Group PA (Portland, OR) and Thrive Counseling LLC (Lynchburg, VA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Tammy Mcmillion's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Tammy Mcmillion accept?

Health plans from Anthem Blue Cross and Blue Shield, Blue Cross Blue Shield of Arizona, Cigna HealthCare of Arizona, Inc, Oscar Insurance Company and Select Health and 1 other insurer list Tammy Mcmillion as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Tammy Mcmillion was last updated on November 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.