PHILLIP ALEXANDER WILLIAMS MD
NPI 1437143716
Obstetrics & Gynecology in Flagstaff, AZ

Q: What is Phillip Williams's NPI number?

The NPI number for Phillip Williams is 1437143716. It was assigned to this individual provider in the NPPES registry on September 1, 2005.

Q: What is Phillip Williams's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Q: When was this NPI record last updated?

The NPPES record for Phillip Williams was last updated on July 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.

Active since September 01, 2005PECOS EnrolledAccepts Medicare Assignment

1895 N JASPER DR STE 3, FLAGSTAFF, AZ 86001(928) 213-6385 Get Directions Write a Review

NPPES record last updated: July 15, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jul 15, 2026, Apr 28, 2026 (2 updates tracked since 2026).

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About Phillip Alexander Williams Md NPPES

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

PHILLIP ALEXANDER WILLIAMS MD (NPI 1437143716) is an individual obstetrics & gynecology provider in Flagstaff, Arizona, licensed in Arizona (25398) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS and is a graduate of University Of Utah School Of Medicine (1992).

NPPES Registry Identity

NPI1437143716

Entity TypeIndividualMale

Primary Taxonomy207V00000X

Provider Legal NamePHILLIP ALEXANDER WILLIAMSCredential: MD

Location Address1895 N JASPER DR STE 3Flagstaff, AZ 86001-1632

Mailing Address1895 N Jasper Dr Ste 3Flagstaff, AZ 86001-1632 · (928) 213-6386 · Fax (928) 213-6386

Phone(928) 213-6385

Sole ProprietorNo

Medical School CMSUniversity Of Utah School Of MedicineGraduated 1992

Enumeration DateSeptember 1, 2005

Last NPPES UpdateJuly 15, 20262 updates tracked since enumeration

NPPES CertifiedJuly 15, 2026

✔ NPI 1437143716 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians

Taxonomy Code207V00000X

License✔ Licensed in AZ · 25398

Definition

An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.

1895 N JASPER DR STE 3, Flagstaff, AZ 86001

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Other Identifiers 1

Medicaid386062AZ

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross Blue Shield of Arizona.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

Phillip Alexander Williams Md 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 ID6305743568

PECOS Enrollment IDI20031219000741

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 Phillip Williams reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Northern Arizona Healthcare Corporation

0.8 mi

Family Medicine

1200 N. BEAVER STREET, ATTN: PAYER CREDENTIALING
Flagstaff, AZ 86001

Reassigned Medicare billing, Arizona enrollment
552 clinicians in this Medicare group

NPI 1669914552 (928) 773-2546

Genesis Ob Gyn PLLC

205 mi

Obstetrics & Gynecology

655 E RIVER RD UNIT 201
Tucson, AZ 85704

Reassigned Medicare billing, Arizona enrollment
157 clinicians in this Medicare group

NPI 1992994214 (520) 258-0585

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

Areas of Expertise CMS Part B claims 11

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

216 services177 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

104 services84 patients

Cervical or vaginal cancer screening; pelvic and clinical breast examination G0101

This procedure involves checking for health issues in the lower abdomen and chest area. It helps identify early signs of certain conditions, increasing the chance for successful treatment. It's a routine check-up that's important for maintaining good health.

87 services87 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

68 services68 patients

Fitting and insertion of vaginal support device 57160

A vaginal support device is a medical tool used to provide support to pelvic organs. During the procedure, a healthcare professional will gently place the device into the appropriate area. This is typically done in a clinical setting and can help with various health conditions.

49 services29 patients

Irrigation of vagina and/or application of drug to treat infection 57150

This procedure involves gently flushing the internal area with a sterile solution to cleanse it. After cleansing, a medication is applied to help treat any existing infection. This process is performed by a healthcare professional to ensure your comfort and safety.

45 services21 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 86001 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

$127.71 typical visit price

range $55.44 – $168.60

Typical copayment $31.92 (range $13.86 – $42.15)

Most-billed visit code 99204

Established Patient

$69.24 typical visit price

range $17.72 – $137.41

Typical copayment $17.31 (range $4.43 – $34.35)

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 10

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

NORTHERN ARIZONA HEALTHCARE CORPORATION

Internal Medicine