DONALD LLOYD WHISLER M.D.
NPI 1639516149
Internal Medicine - Rheumatology in Santa Rosa, CA

Active since May 24, 2013PECOS EnrolledAccepts Medicare Assignment
1162 MONTGOMERY DR STE 3, SANTA ROSA, CA 95405(707) 890-4250(707) 476-2238 Get Directions Write a Review

NPPES record last updated: November 11, 2021. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Nov 11, 2021, Feb 8, 2021, Dec 28, 2020 and 3 more (6 updates tracked since 2016).

About Donald Lloyd Whisler M.d. NPPES

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

DONALD LLOYD WHISLER M.D. (NPI 1639516149) is an individual rheumatology provider in Santa Rosa, California, licensed in California (A155450) and active in the NPI registry since May 2013. He is enrolled in Medicare PECOS and is a graduate of Other (2013).

NPPES Registry Identity

NPI1639516149
Entity TypeIndividualMale
Primary Taxonomy207RR0500X
Provider Legal NameDONALD LLOYD WHISLERCredential: M.D.
Location Address1162 MONTGOMERY DR STE 3Santa Rosa, CA 95405-4802
Mailing Address1162 Montgomery Dr Ste 3Santa Rosa, CA 95405-4802 · (707) 890-4250 · Fax (707) 476-2238
Fax(707) 476-2238
Sole ProprietorNo
Medical School CMSOtherGraduated 2013
Enumeration DateMay 24, 2013
Last NPPES UpdateNovember 11, 20216 updates tracked since enumeration
NPPES CertifiedNovember 11, 2021
NPI 1639516149 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians
Taxonomy Code207RR0500X
License Licensed in CA · A155450
Definition
An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.
1162 MONTGOMERY DR STE 3, Santa Rosa, CA 95405

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

Donald Lloyd Whisler 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 ID7113200361
PECOS Enrollment IDI20181003001671
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 9

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.

Injection, denosumab, 1 mg J0897
Denosumab is a medication given via injection to strengthen your bones. It works by slowing down the cells that break down bone, improving bone density and reducing the risk of fractures. It's often used for osteoporosis treatment.
3,360 services34 patients
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.
600 services332 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.
103 services93 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.
98 services98 patients
Telephone medical discussion with physician, 11-20 minutes 99442
This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.
76 services58 patients
Injection of drug or substance under skin or into muscle 96372
This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.
59 services35 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95405 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
$142.00 typical visit price
range $63.04 – $187.01
Typical copayment $35.50 (range $15.76 – $46.75)
Most-billed visit code 99204
Established Patient
$109.88 typical visit price
range $21.02 – $153.40
Typical copayment $27.47 (range $5.25 – $38.35)
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.

Other Providers at the Same Location NPPES 2

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

Orthopaedic Surgery
1162 MONTGOMERY DR STE 3
SANTA ROSA, CA 95405
Psychiatry & Neurology (Neurology)
1162 MONTGOMERY DR STE 3
SANTA ROSA, CA 95405

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 Whisler's NPI number?

The NPI number for Donald Whisler is 1639516149. It was assigned to this individual provider in the NPPES registry on May 24, 2013.

Where is Donald Whisler located?

Donald Whisler practices at 1162 Montgomery Dr Ste 3, Santa Rosa, CA 95405. The listed phone number is (707) 890-4250.

What is Donald Whisler's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is Donald Whisler enrolled in Medicare?

Yes. Donald Whisler 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.

When was this NPI record last updated?

The NPPES record for Donald Whisler was last updated on November 11, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.