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CALVIN RYAN WILLIAMS
NPI 1932664414
Obstetrics & Gynecology in Oak Ridge, TN

Active since February 08, 2019PECOS EnrolledAccepts Medicare Assignment
988 OAK RIDGE TPKE STE 140, OAK RIDGE, TN 37830(865) 483-7415 Get Directions Write a Review

NPPES record last updated: August 9, 2023. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Aug 9, 2023, Feb 8, 2019 (2 updates tracked since 2019).

About Calvin Ryan Williams NPPES

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

CALVIN RYAN WILLIAMS (NPI 1932664414) is an individual obstetrics & gynecology provider in Oak Ridge, Tennessee, licensed in Tennessee (0000005206) and active in the NPI registry since February 2019. He is enrolled in Medicare PECOS and is a graduate of Lincoln Memorial University Medical Department (2019).

NPPES Registry Identity

NPI1932664414
Entity TypeIndividualMale
Primary Taxonomy207V00000X
Provider Legal NameCALVIN RYAN WILLIAMS
Location Address988 OAK RIDGE TPKE STE 140Oak Ridge, TN 37830-6919
Mailing Address300 S Tulane Ave Apt 1203Oak Ridge, TN 37830-6772 · (646) 647-0514
Phone(865) 483-7415
Sole ProprietorYes
Medical School CMSLincoln Memorial University Medical DepartmentGraduated 2019
Enumeration DateFebruary 8, 2019
Last NPPES UpdateAugust 9, 20232 updates tracked since enumeration
NPPES CertifiedAugust 9, 2023
✔ NPI 1932664414 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in TN · 0000005206
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.
988 OAK RIDGE TPKE STE 140, Oak Ridge, TN 37830
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Other Identifiers 1

Other15885362Caqh Provider Id

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health, Ambetter from Magnolia Health and more.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

Calvin Ryan Williams 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 ID648632455
PECOS Enrollment IDI20230810002681
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 2

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 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.
32 services24 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
19 services19 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37830 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
$121.80 typical visit price
range $52.64 – $160.89
Typical copayment $30.45 (range $13.16 – $40.22)
Most-billed visit code 99204
Established Patient
$66.01 typical visit price
range $16.72 – $131.41
Typical copayment $16.50 (range $4.18 – $32.85)
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.

KATIE ROBERTSON DO
Obstetrics & Gynecology
988 OAK RIDGE TPKE STE 140
OAK RIDGE, TN 37830
Anderson County (541) 951-1229
ANGELA ADKISSON PA
Physician Assistant
988 OAK RIDGE TPKE STE 140
OAK RIDGE, TN 37830
Anderson County (865) 483-7415
REGINA DILL
Obstetrics & Gynecology
988 OAK RIDGE TPKE STE 140
OAK RIDGE, TN 37830
Anderson County (865) 483-7415
DR. LALITA KRISHNAN M.D.
Obstetrics & Gynecology (Gynecology)
988 OAK RIDGE TPKE STE 140
OAK RIDGE, TN 37830
Anderson County (865) 483-7415

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 Calvin Williams's NPI number?

The NPI number for Calvin Williams is 1932664414. It was assigned to this individual provider in the NPPES registry on February 8, 2019.

Where is Calvin Williams located?

Calvin Williams practices at 988 Oak Ridge Tpke Ste 140, Oak Ridge, TN 37830. The listed phone number is (865) 483-7415.

What is Calvin Williams's specialty?

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

Is Calvin Williams enrolled in Medicare?

Yes. Calvin 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 Calvin Williams accept?

Health plans from Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health, Ambetter from Magnolia Health, Ambetter of Alabama and Ambetter of North Carolina and 3 other insurers list Calvin 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 Calvin Williams was last updated on August 9, 2023. 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.