DR. KENDAL LEE HAMANN M.D.
NPI 1285615922
Internal Medicine - Endocrinology, Diabetes & Metabolism in Santa Rosa, CA

Q: What is Kendal Hamann's NPI number?

The NPI number for Kendal Hamann is 1285615922. It was assigned to this individual provider in the NPPES registry on November 9, 2005.

Q: What is Kendal Hamann's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Kendal Hamann was last updated on January 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 months 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.

Active since November 09, 2005PECOS EnrolledAccepts Medicare Assignment

3883 AIRWAY DR STE 201, SANTA ROSA, CA 95403(707) 521-7735(707) 573-5422 Get Directions Write a Review

NPPES record last updated: January 14, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 13, 2021, Feb 11, 2016 (2 updates tracked since 2016).

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About Dr. Kendal Lee Hamann M.d. NPPES

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

DR. KENDAL LEE HAMANN M.D. (NPI 1285615922) is an individual endocrinology, diabetes & metabolism provider in Santa Rosa, California, licensed in California (A81803) and active in the NPI registry since November 2005. She is enrolled in Medicare PECOS, maintains a secondary practice location in Petaluma, and is a graduate of University Of California, San Diego School Of Medicine (2001).

NPPES Registry Identity

NPI1285615922

Entity TypeIndividualFemale

Primary Taxonomy207RE0101X

Provider Legal NameDR. KENDAL LEE HAMANNCredential: M.D.

Location Address3883 AIRWAY DR STE 201Santa Rosa, CA 95403-1671

Mailing AddressPo Box 276950Sacramento, CA 95827-6950 · (707) 521-7735 · Fax (707) 573-5422

Phone(707) 521-7735

Fax(707) 573-5422

Sole ProprietorNo

Medical School CMSUniversity Of California, San Diego School Of MedicineGraduated 2001

Enumeration DateNovember 9, 2005

Last NPPES UpdateJanuary 14, 20252 updates tracked since enumeration

NPPES CertifiedJanuary 14, 2025

✔ NPI 1285615922 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 · A81803

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.

3883 AIRWAY DR STE 201, Santa Rosa, CA 95403

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Secondary Practice Location 1

Location 1411 N McDowell Blvd Ste 10Petaluma, CA 94954-2339 · Phone (707) 521-7735 · Fax (707) 573-5422

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. Kendal Lee Hamann 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 ID941286777

PECOS Enrollment IDI20040624000778

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

Medicare enrollment records show Kendal Hamann reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Permanente Medical Group Inc

36 mi

Internal Medicine

975 SERENO DRIVE
Vallejo, CA 94589

Reassigned Medicare billing, California enrollment
20,078 clinicians in this Medicare group

NPI 1336222397 (707) 651-1000

Sutter Bay Medical Foundation

52 mi

Multi-Specialty

12 CAMINO ENCINAS
Orinda, CA 94563

Reassigned Medicare billing, California enrollment
4,479 clinicians in this Medicare group

NPI 1366898538 (510) 204-8180

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 95403 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.

DR. MICHAEL MAGNOTTI MD, FACE, ECNU

Internal Medicine (Endocrinology, Diabetes & Metabolism)

3883 AIRWAY DR STE 201
SANTA ROSA, CA 95403

Sonoma County (707) 521-7735

WAI PHYO THI MD

Internal Medicine (Endocrinology, Diabetes & Metabolism)

3883 AIRWAY DR STE 201
SANTA ROSA, CA 95403

Sonoma County (707) 521-7735

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 Kendal Hamann's NPI number?

The NPI number for Kendal Hamann is 1285615922. It was assigned to this individual provider in the NPPES registry on November 9, 2005.

Where is Kendal Hamann located?

Kendal Hamann practices at 3883 Airway Dr Ste 201, Santa Rosa, CA 95403. The listed phone number is (707) 521-7735.

What is Kendal Hamann's specialty?

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

Is Kendal Hamann enrolled in Medicare?

Yes. Kendal Hamann 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 Kendal Hamann's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kendal Hamann reassigns Medicare benefits to 2 organizations: Permanente Medical Group Inc (Vallejo, CA) and Sutter Bay Medical Foundation (Orinda, CA). 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 Kendal Hamann'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 Kendal Hamann was last updated on January 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 months 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.