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DR. TIMOTHY BILASH M.D., M.S.
NPI 1437189545
Obstetrics & Gynecology in La Jolla, CA

Active since July 04, 2006PECOS Enrolled
9834 GENESEE AVE, SUITE 400, LA JOLLA, CA 92037(858) 481-0600(866) 336-5620 Get Directions Write a Review

NPPES record last updated: October 28, 2015. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Timothy Bilash M.d., M.s. NPPES

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

DR. TIMOTHY BILASH M.D., M.S. (NPI 1437189545) is an individual obstetrics & gynecology provider in La Jolla, California, licensed in Delaware (C1-0004423) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1437189545
Entity TypeIndividualMale
Primary Taxonomy207V00000X
Provider Legal NameDR. TIMOTHY BILASHCredential: M.D., M.S.
Location Address9834 GENESEE AVE, SUITE 400La Jolla, CA 92037-1223
Mailing Address122 15th Street, Suite 2202San Diego, CA 92014 · (858) 997-0212 · Fax (866) 336-5620
Phone(858) 481-0600
Fax(866) 336-5620
Sole ProprietorYes
Enumeration DateJuly 4, 2006
Last NPPES UpdateOctober 28, 2015
✔ NPI 1437189545 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
Licenses✔ Licensed in DE · C1-0004423✔ Licensed in IL · 036-088375
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.
9834 GENESEE AVE, La Jolla, CA 92037
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Other Identifiers 2

Medicaid036088375IL
Medicare UPINE86733

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Timothy Bilash M.d., M.s. 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

4

Medicare enrollment records show Timothy Bilash reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Pine Ridge Indian Health Service Hospital
1,061 mi
General Acute Care Hospital
EAST HIGHWAY 18
Pine Ridge, SD 57770
  • Reassigned Medicare billing, Texas enrollment
  • 426 clinicians in this Medicare group
NPI 1497786412 (605) 837-3314
Great Plains Tribal Chairmen's Health Board
1,078 mi
Pharmacy
3200 CANYON LAKE DR
Rapid City, SD 57702
  • Reassigned Medicare billing, Texas enrollment
  • 119 clinicians in this Medicare group
NPI 1376105452 (605) 721-1922
Obhg California, P.C.
1,999 mi
Obstetrics & Gynecology
777 LOWNDES HILL RD BLDG 1
Greenville, SC 29607
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: Obhg California PC
  • 711 clinicians in this Medicare group
NPI 1215258892 (800) 967-2289
Medstar Medical Group II LLC
2,273 mi
Internal Medicine
1145 19TH ST NW, SUITE 311
Washington, DC 20036
  • Reassigned Medicare billing, Maryland enrollment
  • 2,602 clinicians in this Medicare group
NPI 1376887844 (202) 429-2401

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 92037 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
$140.22 typical visit price
range $62.10 – $184.71
Typical copayment $35.05 (range $15.52 – $46.17)
Most-billed visit code 99204
Established Patient
$76.87 typical visit price
range $20.62 – $151.42
Typical copayment $19.21 (range $5.15 – $37.85)
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 20

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

DAVID SCOTT MICHELSON MD
Ophthalmology
9834 GENESEE AVE, SUITE 200
LA JOLLA, CA 92037
San Diego County (858) 457-3050
DR. ERIC HONG M.D.
Internal Medicine (Cardiovascular Disease)
9834 GENESEE AVE, SUITE 300
LA JOLLA, CA 92037
San Diego County (858) 824-2900
HAILEY ENGLERT SLP
Speech-Language Pathologist
9834 GENESEE AVE
LA JOLLA, CA 92037
San Diego County (858) 626-4444
SCOTT R MILLER MD FACS APC
Plastic Surgery
9834 GENESEE AVE, SUITE 210
LA JOLLA,, CA 92037
San Diego County (858) 453-3133
PAUL E MICHELSON MD, INC
Ophthalmology
9834 GENESEE AVE, SUITE 200
LA JOLLA, CA 92037
San Diego County (858) 457-3050
MARILYN SARA FREEMAN PH.D., MFT
Marriage & Family Therapist
9834 GENESEE AVE, STE. 427
LA JOLLA, CA 92037
San Diego County (858) 502-5553
LA JOLLA NEUROSURGICAL ASSOCIATES A MEDICAL CORPORATION
Specialist
9834 GENESEE AVE, SUITE #411
LA JOLLA, CA 92037
San Diego County (858) 677-1755
FREDERICK J DE LA VEGA, MD
Specialist
9834 GENESEE AVE, 411
LA JOLLA, CA 92037
San Diego County (858) 677-1755

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 Timothy Bilash's NPI number?

The NPI number for Timothy Bilash is 1437189545. It was assigned to this individual provider in the NPPES registry on July 4, 2006.

Where is Timothy Bilash located?

Timothy Bilash practices at 9834 Genesee Ave Suite 400, La Jolla, CA 92037. The listed phone number is (858) 481-0600.

What is Timothy Bilash's specialty?

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

Is Timothy Bilash enrolled in Medicare?

Yes. Timothy Bilash is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Timothy Bilash's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Timothy Bilash reassigns Medicare benefits to 4 organizations: Pine Ridge Indian Health Service Hospital (Pine Ridge, SD), Great Plains Tribal Chairmen's Health Board (Rapid City, SD), Obhg California, P.C. (Greenville, SC) and Medstar Medical Group II LLC (Washington, DC). 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 Timothy Bilash'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 Timothy Bilash was last updated on October 28, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.