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NIMISH THAKER MD
NPI 1871541961
Urology in Ontario, CA

Active since May 04, 2006PECOS EnrolledAccepts Medicare Assignment
1791 E HOLT BLVD UNIT 101, ONTARIO, CA 91761(909) 460-0354(909) 460-0367 Get Directions Write a Review

NPPES record last updated: May 6, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: May 6, 2024, Jun 22, 2023 (2 updates tracked since 2023).

About Nimish Thaker Md NPPES

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

NIMISH THAKER MD (NPI 1871541961) is an individual urology provider in Ontario, California, licensed in California (A74757) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with Asante Three Rivers Medical Center, and is a graduate of Other (1994).

NPPES Registry Identity

NPI1871541961
Entity TypeIndividualMale
Primary Taxonomy208800000X
Provider Legal NameNIMISH THAKERCredential: MD
Location Address1791 E HOLT BLVD UNIT 101Ontario, CA 91761-2118
Mailing Address1791 E Holt Blvd Unit 101Ontario, CA 91761-2118 · (909) 460-0354 · Fax (909) 460-0367
Phone(909) 460-0354
Fax(909) 460-0367
Sole ProprietorYes
Medical School CMSOtherGraduated 1994
Enumeration DateMay 4, 2006
Last NPPES UpdateMay 6, 20242 updates tracked since enumeration
NPPES CertifiedMay 6, 2024
✔ NPI 1871541961 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyUrologyAllopathic & Osteopathic Physicians
Taxonomy Code208800000X
License✔ Licensed in CA · A74757
Definition
A urologist manages benign and malignant medical and surgical disorders of the genitourinary system and the adrenal gland. This specialist has comprehensive knowledge of and skills in endoscopic, percutaneous and open surgery of congenital and acquired conditions of the urinary and reproductive systems and their contiguous structures.
Also ListedSpecialistTaxonomy 174400000X · License A747570 (CA)
1791 E HOLT BLVD UNIT 101, Ontario, CA 91761
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include BridgeSpan Health Company, HealthPartners, Moda Health Plan, Inc. and more.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

Nimish Thaker 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 ID2163441007
PECOS Enrollment IDI20051121000261, I20251021004262
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

7

Medicare enrollment records show Nimish Thaker reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Thaker Urological Center, Inc.
Same address
Specialist
1791 E HOLT BLVD UNIT 101
Ontario, CA 91761
  • Reassigned Medicare billing, California enrollment
NPI 1396108940 (909) 460-0354
Department Of State Hospitals
27 mi
Psychiatric Hospital
11401 BLOOMFIELD AVE
Norwalk, CA 90650
  • Reassigned Medicare billing, California enrollment
  • 755 clinicians in this Medicare group
NPI 1265406565 (562) 863-7011
Asante
636 mi
General Acute Care Hospital
2825 E BARNETT RD
Medford, OR 97504
  • Reassigned Medicare billing, Oregon enrollment
  • 267 clinicians in this Medicare group
NPI 1770587107 (541) 789-7000
Asante Three Rivers Medical Center, LLC
655 mi
General Acute Care Hospital
500 SW RAMSEY AVENUE
Grants Pass, OR 97527
  • Reassigned Medicare billing, Oregon enrollment
  • 207 clinicians in this Medicare group
NPI 1801891809 (541) 472-7000
Aspirus Wausau Hospital Inc
1,646 mi
Clinic/Center
103 S 3RD AVE
Edgar, WI 54426
  • Reassigned Medicare billing, Wisconsin enrollment
  • 633 clinicians in this Medicare group
NPI 1447580725 (715) 352-2333
Aspirus Stevens Point Hospital & Clinics, Inc.
1,656 mi
Clinic/Center
209 PRENTICE STREET NORTH
Stevens Point, WI 54481
  • Reassigned Medicare billing, Wisconsin enrollment
  • 619 clinicians in this Medicare group
NPI 1679706022 (715) 345-5300
Aspirus Rhinelander & Tomahawk Hospitals & Clinics, Inc.
1,657 mi
Clinic/Center
2401 PLOVER RD
Plover, WI 54467
  • Reassigned Medicare billing, Wisconsin enrollment
  • 935 clinicians in this Medicare group
NPI 1053080168 (715) 295-3800

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 7

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.
214 services77 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
96 services40 patients
Ultrasound measurement of bladder capacity after voiding 51798
Ultrasound measurement of bladder capacity after voiding is a non-invasive test that uses sound waves to create images of your bladder. It's done after you've emptied your bladder to see if there's any leftover urine, which can help diagnose certain conditions.
66 services32 patients
Urinalysis, manual test 81002
A urinalysis is a simple, non-invasive test that checks the urine for various elements such as sugar, protein, and signs of infection. It can help detect many common conditions, including kidney disease and diabetes. The manual test involves a lab technician examining a urine sample.
45 services31 patients
Electronic assessment of bladder emptying 51741
Electronic assessment of bladder emptying is a non-invasive test that measures how well your bladder functions. It uses ultrasound technology to create images of your bladder before and after you use the restroom, helping to identify any issues with bladder emptying.
31 services21 patients
Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional 99211
This service involves an outpatient visit for established patients who may not need direct interaction with a healthcare professional. It could include reviewing test results, monitoring existing conditions, or adjusting treatment plans. It's typically done remotely, ensuring your comfort and convenience.
21 services17 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Asante Three Rivers Medical Center

Acute Care Hospitals · Grants Pass, OR
5/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number380002
Location500 SW Ramsey AvenueGrants Pass, OR 97527 · Josephine County
Emergency services Birthing friendly

Asante Rogue Regional Medical Center

Acute Care Hospitals · Medford, OR
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number380018
Location2825 E Barnett RoadMedford, OR 97504 · Jackson County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91761 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
$136.04 typical visit price
range $59.60 – $179.42
Typical copayment $34.01 (range $14.90 – $44.85)
Most-billed visit code 99204
Established Patient
$74.08 typical visit price
range $19.37 – $146.42
Typical copayment $18.52 (range $4.84 – $36.60)
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

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.
100%601 patients5/55-star benchmark: 100%
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.
100%479 patients5/55-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.
48%1,022 patients2/55-star benchmark: 100%
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…
12%1,022 patients1/55-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…
3%1,022 patients1/55-star benchmark: 79%
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

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

THAKER UROLOGICAL CENTER, INC.
Specialist
1791 E HOLT BLVD UNIT 101
ONTARIO, CA 91761
San Bernardino County (909) 460-0354

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 Nimish Thaker's NPI number?

The NPI number for Nimish Thaker is 1871541961. It was assigned to this individual provider in the NPPES registry on May 4, 2006.

Where is Nimish Thaker located?

Nimish Thaker practices at 1791 E Holt Blvd Unit 101, Ontario, CA 91761. The listed phone number is (909) 460-0354.

What is Nimish Thaker's specialty?

The primary specialty registered for this NPI is Urology with taxonomy code 208800000X.

Is Nimish Thaker enrolled in Medicare?

Yes. Nimish Thaker 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 organizations bill Medicare for Nimish Thaker's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nimish Thaker reassigns Medicare benefits to 7 organizations: Thaker Urological Center, Inc. (Ontario, CA), Department Of State Hospitals (Norwalk, CA), Asante (Medford, OR), Asante Three Rivers Medical Center, LLC (Grants Pass, OR), Aspirus Wausau Hospital Inc (Edgar, WI) and 2 more organizations, listed in the Medicare section above. 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 Nimish Thaker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Nimish Thaker accept?

Health plans from BridgeSpan Health Company, HealthPartners, Moda Health Plan, Inc., PacificSource Health Plans and Providence Health Plan and 1 other insurer list Nimish Thaker 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.

Is Nimish Thaker affiliated with any hospitals?

According to CMS data, Nimish Thaker is affiliated with Asante Three Rivers Medical Center and Asante Rogue Regional Medical Center.

When was this NPI record last updated?

The NPPES record for Nimish Thaker was last updated on May 6, 2024. 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.