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DR. NADER KAMANGAR MD
NPI 1922093285
Internal Medicine - Critical Care Medicine in Walnut Creek, CA

Active since September 13, 2005PECOS Enrolled
1399 YGNACIO VALLEY RD, STE 14, WALNUT CREEK, CA 94598(925) 939-3050(925) 939-3057 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jul 13, 2026, Sep 11, 2025 (2 updates tracked since 2025).

About Dr. Nader Kamangar Md NPPES

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

DR. NADER KAMANGAR MD (NPI 1922093285) is an individual critical care medicine provider in Walnut Creek, California, licensed in California (A66078) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1922093285
Entity TypeIndividualMale
Primary Taxonomy207RC0200X
Provider Legal NameDR. NADER KAMANGARCredential: MD
Location Address1399 YGNACIO VALLEY RD, STE 14Walnut Creek, CA 94598-2884
Mailing Address1399 Ygnacio Valley Rd, Suite 14Walnut Creek, CA 94598-2884 · (925) 939-3050
Phone(925) 939-3050
Fax(925) 939-3057
Sole ProprietorNo
Enumeration DateSeptember 13, 2005
Last NPPES UpdateJuly 13, 20262 updates tracked since enumeration
✔ NPI 1922093285 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Critical Care MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RC0200X
License✔ Licensed in CA · A66078
Definition
An internist who diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.
Also ListedInternal Medicine · Pulmonary DiseaseTaxonomy 207RP1001X · License A66078 (CA)
1399 YGNACIO VALLEY RD, Walnut Creek, CA 94598
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Nader Kamangar Md 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 Reassignment

Medicare enrollment records show Nader Kamangar reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

County Of Los Angeles Auditor Controller
311 mi
Clinic/Center
335 E AVENUE I
Lancaster, CA 93535
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: County Of Los Angeles
  • 1,939 clinicians in this Medicare group
NPI 1366453045 (661) 948-8581

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 94598 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
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
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.

Referred Medical Equipment & Supplies CMS DME claims 2

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

Portable oxygen contents, gaseous, 1 month's supply = 1 unit E0443
DME-Oxygen and Supplies · category DC000N
1 supplier12 claims12 services$25.64 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
1 supplier15 claims15 services$88.19 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 14

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

MR. RAMIN KHASHAYAR MD
Internal Medicine (Critical Care Medicine)
1399 YGNACIO VALLEY RD, STE 14
WALNUT CREEK, CA 94598
Contra Costa County (925) 939-3050
PHOENIX ADVANCED MEDICAL ASSOCIATES
Internal Medicine
1399 YGNACIO VALLEY RD, SUITE 14
WALNUT CREEK, CA 94598
Contra Costa County (925) 934-4123
CHRISTINA MADLENER
Marriage & Family Therapist
1399 YGNACIO VALLEY RD, SUITE 12
WALNUT CREEK, CA 94598
Contra Costa County (925) 938-5701
R. RYAN PLATT M.D.
Internal Medicine (Interventional Cardiology)
1399 YGNACIO VALLEY RD, 11
WALNUT CREEK, CA 94598
Contra Costa County (925) 937-1770
DR. ROBERT I. PICKER M.D.
Psychiatry & Neurology (Psychiatry)
1399 YGNACIO VALLEY RD, SUITE 25
WALNUT CREEK, CA 94598
Contra Costa County (925) 945-8440
SAHAR BERJIS RD
Dietitian, Registered
1399 YGNACIO VALLEY RD, SUITE 14
WALNUT CREEK, CA 94598
Contra Costa County (925) 566-4429
PAIGE CARMICHAEL MFT
Marriage & Family Therapist
1399 YGNACIO VALLEY RD, 1B
WALNUT CREEK, CA 94598
Contra Costa County (925) 768-7169
AUGUST GENE VOELKEL M.D.
Internal Medicine (Cardiovascular Disease)
1399 YGNACIO VALLEY RD, STE 11
WALNUT CREEK, CA 94598
Contra Costa County (925) 937-1770

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 Nader Kamangar's NPI number?

The NPI number for Nader Kamangar is 1922093285. It was assigned to this individual provider in the NPPES registry on September 13, 2005.

Where is Nader Kamangar located?

Nader Kamangar practices at 1399 Ygnacio Valley Rd Ste 14, Walnut Creek, CA 94598. The listed phone number is (925) 939-3050.

What is Nader Kamangar's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.

Is Nader Kamangar enrolled in Medicare?

Yes. Nader Kamangar is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Nader Kamangar's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nader Kamangar reassigns Medicare benefits to County Of Los Angeles Auditor Controller (Lancaster, 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 Nader Kamangar'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 Nader Kamangar was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.