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DR. TAMMI LENEE WILLIAMS M.D.
NPI 1003876509
Obstetrics & Gynecology in Gilbert, AZ

Active since March 27, 2006PECOS EnrolledAccepts Medicare Assignment
5656 S POWER RD STE 137, GILBERT, AZ 85295(480) 821-3600(480) 543-2033 Get Directions Write a Review

NPPES record last updated: November 1, 2023. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Tammi Lenee Williams M.d. NPPES

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

DR. TAMMI LENEE WILLIAMS M.D. (NPI 1003876509) is an individual obstetrics & gynecology provider in Gilbert, Arizona, licensed in Arizona (55489) and active in the NPI registry since March 2006. She is enrolled in Medicare PECOS and is a graduate of University Of Virginia School Of Medicine (1988).

NPPES Registry Identity

NPI1003876509
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameDR. TAMMI LENEE WILLIAMSCredential: M.D.
Location Address5656 S POWER RD STE 137Gilbert, AZ 85295-8490
Mailing AddressPo Box 6730Chandler, AZ 85246-6730 · (480) 821-3600 · Fax (805) 432-0334
Phone(480) 821-3600
Fax(480) 543-2033
Sole ProprietorNo
Medical School CMSUniversity Of Virginia School Of MedicineGraduated 1988
Enumeration DateMarch 27, 2006
Last NPPES UpdateNovember 1, 2023
NPPES CertifiedNovember 1, 2023
✔ NPI 1003876509 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 · 55489
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.

5656 S POWER RD STE 137, Gilbert, AZ 85295
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Other Names 1

Former Name (1)Tammi Lenee Stephens M.d.

Other Identifiers 1

Medicaid097220AZ

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Blue Cross Blue Shield of Arizona, UnitedHealthcare.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Tammi Lenee Williams M.d. 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 ID3375668056
PECOS Enrollment IDI20210923000900
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.

Areas of Expertise CMS Part B claims

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.
59 services40 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 85295 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Breast Cancer Screening
Percentage of women 50-74 years of age who had a mammogram to screen for breast cancer
84%426 patients4/55-star benchmark: 92%
Cervical Cancer Screening
Percentage of women 21-64 years of age who were screened for cervical cancer using either of the following criteria: - Women age 21-64 who had cervical cytology performed every 3 years - Women age 30-64 who had cervical cytology/human papillomavirus (HPV)…
96%1,179 patients
e-Prescribing
At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.
98%2,087 patients4/55-star benchmark: 99%
Health Information Exchange
The MIPS eligible clinician that transitions or refers their patient to another setting of care or health care clinician (1) uses CEHRT to create a summary of care record; and (2) electronically transmits such summary to a receiving health care clinician for…
68%107 patients4/55-star benchmark: 88%
Medication Reconciliation
The MIPS eligible clinician performs medication reconciliation for at least one transition of care in which the patient is transitioned into the care of the MIPS eligible clinician.
99%147 patients4/55-star benchmark: 100%
Patient-Specific Education
The MIPS eligible clinician must use clinically relevant information from CEHRT to identify patient-specific educational resources and provide access to those materials to at least one unique patient seen by the MIPS eligible clinician.
40%1,957 patients2/55-star benchmark: 97%
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan
Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…
42%1,340 patients2/55-star benchmark: 97%
Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention
Percentage of patients aged 18 years and older who were screened for tobacco use one or more times within 24 months AND who received tobacco cessation intervention if identified as a tobacco user
Patients screenedForUse: 45% · 1,163 patients
43%1,162 patients2/55-star benchmark: 98%
Provide Patient Access
At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold…
100%1,957 patients5/55-star benchmark: 100%
Secure Messaging
For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of CEHRT to the patient (or the patient-authorized representative), or in response to a secure…
86%1,957 patients4/55-star benchmark: 89%
View, Download, or Transmit (VDT)
At least one patient seen by the MIPS eligible clinician during the performance period (or patient-authorized representative) views, downloads or transmits their health information to a third party during the performance period.
90%1,957 patients
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 3

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

ASHLEE NICOLE UDALL NP
Nurse Practitioner
5656 S POWER RD STE 137
GILBERT, AZ 85295
Maricopa County (480) 821-3600
HEALTHY PREGNANCY PERINATOLOGY, LLC
Obstetrics & Gynecology (Maternal & Fetal Medicine)
5656 S POWER RD STE 137
GILBERT, AZ 85295
Maricopa County (480) 821-3610
TERRI LUANN LARKIN NP
Nurse Practitioner (Women's Health)
5656 S POWER RD STE 137
GILBERT, AZ 85295
Maricopa County (480) 821-3600

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 Tammi Williams's NPI number?

The NPI number for Tammi Williams is 1003876509. It was assigned to this individual provider in the NPPES registry on March 27, 2006. The provider is also known as Tammi Lenee Stephens M.D..

Where is Tammi Williams located?

Tammi Williams practices at 5656 S Power Rd Ste 137, Gilbert, AZ 85295. The listed phone number is (480) 821-3600.

What is Tammi Williams's specialty?

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

Is Tammi Williams enrolled in Medicare?

Yes. Tammi Williams 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.

What insurance does Tammi Williams accept?

Health plans from Ambetter from Arizona Complete Health, Blue Cross Blue Shield of Arizona and UnitedHealthcare list Tammi Williams 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 Tammi Williams was last updated on November 1, 2023. NPI Profile syncs with the weekly NPPES data releases published by CMS.