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DR. TROY CHRISTOPHER WILLIAMS M.D.
NPI 1093929630
Obstetrics & Gynecology in Westlake Village, CA

Active since May 10, 2007PECOS EnrolledAccepts Medicare Assignment
32144 AGOURA RD, SUITE 207, WESTLAKE VILLAGE, CA 91361(818) 597-9300(818) 597-9328 Get Directions Write a Review

NPPES record last updated: August 4, 2011. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Troy Christopher Williams M.d. NPPES

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

DR. TROY CHRISTOPHER WILLIAMS M.D. (NPI 1093929630) is an individual obstetrics & gynecology provider in Westlake Village, California, licensed in California (A103922) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS and is a graduate of Wayne State University School Of Medicine (2002).

NPPES Registry Identity

NPI1093929630
Entity TypeIndividualMale
Primary Taxonomy207V00000X
Provider Legal NameDR. TROY CHRISTOPHER WILLIAMSCredential: M.D.
Location Address32144 AGOURA RD, SUITE 207Westlake Village, CA 91361-4031
Mailing Address32144 Agoura Rd, Suite 207Westlake Village, CA 91361-4031 · (818) 597-9300 · Fax (818) 597-9328
Phone(818) 597-9300
Fax(818) 597-9328
Sole ProprietorYes
Medical School CMSWayne State University School Of MedicineGraduated 2002
Enumeration DateMay 10, 2007
Last NPPES UpdateAugust 4, 2011
✔ NPI 1093929630 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in CA · A103922
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.
Also ListedObstetrics & Gynecology · Hospice and Palliative MedicineTaxonomy 207VH0002X · License 4301080639 (MI)
32144 AGOURA RD, Westlake Village, CA 91361
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Other Identifiers 1

Medicaid1467607127CA

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

Dr. Troy Christopher 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 ID9638121692
PECOS Enrollment IDI20090610000254
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 Reassignment

Medicare enrollment records show Troy Williams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Trillium Med Spa Cosmetic Surgery And Laser Center
9.8 mi
Obstetrics & Gynecology
145 PARK LN STE 200
Moorpark, CA 93021
  • Reassigned Medicare billing, California enrollment
  • 6 clinicians in this Medicare group
NPI 1467607127 (805) 531-9419

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

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.
260 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91361 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
$140.72 typical visit price
range $62.32 – $185.36
Typical copayment $35.18 (range $15.58 – $46.34)
Most-billed visit code 99204
Established Patient
$77.11 typical visit price
range $20.68 – $151.85
Typical copayment $19.27 (range $5.17 – $37.96)
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 20

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

DR. CHARLES ABRAHAM KELMAN D.P.M
Podiatrist
32144 AGOURA RD, STE 105
WESTLAKE VILLAGE, CA 91361
Los Angeles County (818) 706-1924
DR. ASHER KASHANCHI PHARM D
Pharmacist
32144 AGOURA RD
WESTLAKE VILLAGE, CA 91361
Los Angeles County (818) 707-2500
HECTOR ALBERTO CABALLERO MD
Internal Medicine (Gastroenterology)
32144 AGOURA RD, SUITE 118
WESTLAKE VILLAGE, CA 91361
Los Angeles County (805) 495-0823
RAZMIG KRUMIAN D.O. A MEDICAL CORPORATION
Family Medicine
32144 AGOURA RD, SUITE 218
WESTLAKE VILLAGE, CA 91361
Los Angeles County (818) 889-9230
GERALD CHARLES BERKMAN MD
Pediatrics (Pediatric Nephrology)
32144 AGOURA RD, SUITE 211
WESTLAKE VILLAGE, CA 91361
Los Angeles County (818) 889-8387
DR. BENJAMIN PINGTZEE SUN D.D.S.
Dentist (General Practice)
32144 AGOURA RD, SUITE 204
WESTLAKE VILLAGE, CA 91361
Los Angeles County (818) 597-9777
DAPHNE I PANAGOTACOS MD
Dermatology (Dermatopathology)
32144 AGOURA RD, SUITE 106
WESTLAKE VILLAGE, CA 91361
Los Angeles County (805) 379-3376
DARIA M. SCHNEIDMAN-FERNANDEZ N.P.
Nurse Practitioner (Family)
32144 AGOURA RD, SUITE 218
WESTLAKE VILLAGE, CA 91361
Los Angeles County (818) 889-9230

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 Troy Williams's NPI number?

The NPI number for Troy Williams is 1093929630. It was assigned to this individual provider in the NPPES registry on May 10, 2007.

Where is Troy Williams located?

Troy Williams practices at 32144 Agoura Rd Suite 207, Westlake Village, CA 91361. The listed phone number is (818) 597-9300.

What is Troy Williams's specialty?

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

Is Troy Williams enrolled in Medicare?

Yes. Troy 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.

Which organization bills Medicare for Troy Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Troy Williams reassigns Medicare benefits to Trillium Med Spa Cosmetic Surgery And Laser Center (Moorpark, CA). The 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 Troy Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Troy Williams was last updated on August 4, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.