DR. ALEXANDER THOMAS PARKER MD
NPI 1366658361
Psychiatry & Neurology - Psychiatry in Ann Arbor, MI

Q: What is Alexander Parker's NPI number?

The NPI number for Alexander Parker is 1366658361. It was assigned to this individual provider in the NPPES registry on May 15, 2007.

Q: What is Alexander Parker's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Q: When was this NPI record last updated?

The NPPES record for Alexander Parker was last updated on July 2, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.

Active since May 15, 2007PECOS Enrolled

623 W HURON ST, ANN ARBOR, MI 48103(734) 274-2632(734) 661-2668 Get Directions Write a Review

NPPES record last updated: July 2, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 2, 2024, Jul 21, 2022, Mar 17, 2018 and 1 more (4 updates tracked since 2017).

On this page

About Dr. Alexander Thomas Parker Md NPPES

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

DR. ALEXANDER THOMAS PARKER MD (NPI 1366658361) is an individual psychiatry provider in Ann Arbor, Michigan, licensed in Michigan (4301106294) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS and maintains a secondary practice location in Westland.

NPPES Registry Identity

NPI1366658361

Entity TypeIndividualMale

Primary Taxonomy2084P0800X

Provider Legal NameDR. ALEXANDER THOMAS PARKERCredential: MD

Location Address623 W HURON STAnn Arbor, MI 48103-6712

Mailing Address227 Crest StAnn Arbor, MI 48103-4315 · (734) 274-3838

Phone(734) 274-2632

Fax(734) 661-2668

Sole ProprietorYes

Enumeration DateMay 15, 2007

Last NPPES UpdateJuly 2, 20244 updates tracked since enumeration

NPPES CertifiedJuly 2, 2024

✔ NPI 1366658361 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians

Taxonomy Code2084P0800X

Licenses✔ Licensed in MI · 4301106294✔ Licensed in NY · 252072

Definition

A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

623 W HURON ST, Ann Arbor, MI 48103

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Secondary Practice Location 1

Location 18623 N Wayne Rd, Suite 310Westland, MI 48185-1137 · Phone (734) 425-0636 · Fax (734) 425-4771

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Priority Health.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Alexander Thomas Parker Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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

Medicare enrollment records show Alexander Parker reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Hegira Health, Inc

20 mi

Mental Health (Including Community Mental Health Center)

8623 N WAYNE ROAD, SUITE 310
Westland, MI 48185

Reassigned Medicare billing, Michigan enrollment
89 clinicians in this Medicare group

NPI 1184684979 (734) 425-0636

Mymichigan Medical Center Alpena

194 mi

Emergency Medicine

1501 W CHISHOLM ST
Alpena, MI 49707

Reassigned Medicare billing, Michigan enrollment
219 clinicians in this Medicare group

NPI 1508332792 (989) 356-7202

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 48103 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

$177.36 typical visit price

range $58.04 – $177.36

Typical copayment $44.34 (range $14.51 – $44.34)

Most-billed visit code 99205

Established Patient

$72.38 typical visit price

range $18.32 – $143.49

Typical copayment $18.09 (range $4.58 – $35.87)

Most-billed visit code 99213

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 4

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

DR. BARBARA HANDELSMAN RIGNEY PH.D.

Psychologist

623 W HURON ST
ANN ARBOR, MI 48103

Washtenaw County (734) 358-0386

HURON RIVER COUNSELING LLC

Psychologist (Clinical)

623 W HURON ST, 2ND FLOOR
ANN ARBOR, MI 48103

Washtenaw County (734) 218-6644

BARBARA H RIGNEY PHD PLLC

Psychologist (Clinical)

623 W HURON ST
ANN ARBOR, MI 48103

Washtenaw County (734) 657-0199

OLD BAT INC

Psychologist (Clinical)

623 W HURON ST, 2ND FLOOR
ANN ARBOR, MI 48103

Washtenaw County (734) 218-6644

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 Alexander Parker's NPI number?

The NPI number for Alexander Parker is 1366658361. It was assigned to this individual provider in the NPPES registry on May 15, 2007.

Where is Alexander Parker located?

Alexander Parker practices at 623 W Huron St, Ann Arbor, MI 48103. The listed phone number is (734) 274-2632.

What is Alexander Parker's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Alexander Parker enrolled in Medicare?

Yes. Alexander Parker is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Alexander Parker's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alexander Parker reassigns Medicare benefits to 2 organizations: Hegira Health, Inc (Westland, MI) and Mymichigan Medical Center Alpena (Alpena, MI). 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 Alexander Parker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Alexander Parker accept?

Health plans from Priority Health list Alexander Parker 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 Alexander Parker was last updated on July 2, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.