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DR. DONALD WESTBIE M.D.
NPI 1912984436
Internal Medicine - Endocrinology, Diabetes & Metabolism in Sonora, CA

Active since December 27, 2005PECOS EnrolledAccepts Medicare Assignment
79.22/100
CMS Quality Rating
680 GUZZI LN, SUITE 201, SONORA, CA 95370(209) 536-5790(209) 536-3593 Get Directions Write a Review

NPPES record last updated: November 26, 2014. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Donald Westbie M.d. NPPES

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

DR. DONALD WESTBIE M.D. (NPI 1912984436) is an individual endocrinology, diabetes & metabolism provider in Sonora, California, licensed in California (A25918) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS and is a graduate of Tulane University School Of Medicine (1970).

NPPES Registry Identity

NPI1912984436
Entity TypeIndividualMale
Primary Taxonomy207RE0101X
Provider Legal NameDR. DONALD WESTBIECredential: M.D.
Location Address680 GUZZI LN, SUITE 201Sonora, CA 95370-5288
Mailing Address680 Guzzi Ln, Suite 201Sonora, CA 95370-5288 · (209) 536-5790 · Fax (209) 536-3593
Phone(209) 536-5790
Fax(209) 536-3593
Sole ProprietorYes
Medical School CMSTulane University School Of MedicineGraduated 1970
Enumeration DateDecember 27, 2005
Last NPPES UpdateNovember 26, 2014
✔ NPI 1912984436 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License✔ Licensed in CA · A25918
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
680 GUZZI LN, Sonora, CA 95370
Open in Google Maps ↗

Other Identifiers 1

Medicare UPINA24631CA

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. Donald Westbie 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 ID7416940135
PECOS Enrollment IDI20040407000516
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 Donald Westbie reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Sonora Community Hospital
0.1 mi
General Acute Care Hospital
1000 GREENLEY RD
Sonora, CA 95370
  • Reassigned Medicare billing, California enrollment
  • Also billed through NPI 1033100854 (California), NPI 1821089749 (California)
  • 172 clinicians in this Medicare group
NPI 1780673376 (209) 536-5000

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 5

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.
487 services224 patients
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.
228 services115 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
85 services85 patients
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212
This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
33 services27 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
28 services28 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95370 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
$133.94 typical visit price
range $58.87 – $176.60
Typical copayment $33.48 (range $14.71 – $44.15)
Most-billed visit code 99204
Established Patient
$103.36 typical visit price
range $19.28 – $144.60
Typical copayment $25.84 (range $4.82 – $36.15)
Most-billed visit code 99214
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.

79.22/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality86.14
Promoting Interoperability97
Improvement Activities40
Cost47.11

Referred Medical Equipment & Supplies CMS DME claims 8

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Supplies for maintenance of insulin infusion catheter, per week A4224
DME-Other DME · category DE017N
2 suppliers19 claims247 services$19.09 avg. paid by Medicare
Supplies for external insulin infusion pump, syringe type cartridge, sterile, each A4225
DME-Other DME · category DE017N
2 suppliers19 claims630 services$2.39 avg. paid by Medicare
Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
15 suppliers226 claims508 services$5.76 avg. paid by Medicare
Normal, low and high calibrator solution / chips A4256
DME-Other DME · category DE000N
5 suppliers19 claims19 services$2.92 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
10 suppliers34 claims51 services$1.19 avg. paid by Medicare
Insulin for administration through dme (i.e., insulin pump) per 50 units J1817
Treatment-Injections and Infusions (nononcologic) · category RI000N
4 suppliers13 claims1,000 services$7.29 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 17

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

DR. EDWARD WILLIAM CLINITE D.O.
Family Medicine
680 GUZZI LN, SUITE 106
SONORA, CA 95370
Tuolumne County (209) 532-2792
SIERRA SPECIALTY CALL GROUP MEDICAL CORPORATION
Urology
680 GUZZI LN, SUITE 203
SONORA, CA 95370
Tuolumne County (209) 532-5244
DR. AIRELL LEIGHTON NYGAARD M.D.
Orthopaedic Surgery
680 GUZZI LN, SUITE 102
SONORA, CA 95370
Tuolumne County (209) 588-1800
TONY L LLOYD M.D., INC.
Family Medicine
680 GUZZI LN, STE 106
SONORA, CA 95370
Tuolumne County (209) 588-8840
MS. DEANNA FOSSEN NP
Nurse Practitioner (Family)
680 GUZZI LN, SUITE 105
SONORA, CA 95370
Tuolumne County (209) 532-0126
STEPHEN HOPKINS MD MEDICAL CORPORATION
Surgery
680 GUZZI LN, SUITE 103
SONORA, CA 95370
Tuolumne County (209) 532-5528
DR. EDEN LOWELL SMITH M.D.
Surgery
680 GUZZI LN, STE 201
SONORA, CA 95370
Tuolumne County (209) 536-1785
SONORA COMMUNITY HOSPITAL
Surgery (Vascular Surgery)
680 GUZZI LN, STE 104
SONORA, CA 95370
Tuolumne County (209) 536-5090

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 Donald Westbie's NPI number?

The NPI number for Donald Westbie is 1912984436. It was assigned to this individual provider in the NPPES registry on December 27, 2005.

Where is Donald Westbie located?

Donald Westbie practices at 680 Guzzi Ln Suite 201, Sonora, CA 95370. The listed phone number is (209) 536-5790.

What is Donald Westbie's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Donald Westbie enrolled in Medicare?

Yes. Donald Westbie 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 Donald Westbie's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Donald Westbie reassigns Medicare benefits to Sonora Community Hospital (Sonora, 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 Donald Westbie'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 Donald Westbie was last updated on November 26, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.