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WILLIAM JOSEPH HEIDMAN MD
NPI 1275238016
Emergency Medicine in Las Vegas, NV

Active since April 03, 2023PECOS EnrolledAccepts Medicare Assignment
6655 S CIMARRON RD STE 100, LAS VEGAS, NV 89113(702) 853-3561 Get Directions Write a Review

NPPES record last updated: July 22, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 22, 2026, Mar 24, 2026, Apr 3, 2023 (3 updates tracked since 2023).

About William Joseph Heidman Md NPPES

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

WILLIAM JOSEPH HEIDMAN MD (NPI 1275238016) is an individual emergency medicine provider in Las Vegas, Nevada, licensed in California (A205806) and active in the NPI registry since April 2023. He is enrolled in Medicare PECOS, is affiliated with Valley Hospital Medical Center, and maintains 4 additional practice locations.

NPPES Registry Identity

NPI1275238016
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameWILLIAM JOSEPH HEIDMANCredential: MD
Location Address6655 S CIMARRON RD STE 100Las Vegas, NV 89113-2181
Mailing Address6655 S Cimarron Rd Ste 100Las Vegas, NV 89113-2181
Phone(702) 853-3561
Sole ProprietorNo
Medical School CMSTulane University School Of MedicineGraduated 2023
Enumeration DateApril 3, 2023
Last NPPES UpdateJuly 22, 20263 updates tracked since enumeration
NPPES CertifiedJuly 22, 2026
✔ NPI 1275238016 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Licenses✔ Licensed in CA · A205806✔ Licensed in NV · 29448
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
6655 S CIMARRON RD STE 100, Las Vegas, NV 89113
Open in Google Maps ↗

Secondary Practice Locations 4

Location 16900 N Durango DrLas Vegas, NV 89149-4409 · Phone (702) 835-9700
Location 25400 S Rainbow BlvdLas Vegas, NV 89118-1859 · Phone (702) 853-3000
Location 3657 N Town Center DrLas Vegas, NV 89144-6367 · Phone (702) 233-7000
Location 42075 E Flamingo RdLas Vegas, NV 89119-5188 · Phone (702) 733-8000

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

William Joseph Heidman 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 ID8022589753
PECOS Enrollment IDI20260603003952
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 William Heidman reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Shadow Emergency Physicians PLLC
4.2 mi
Emergency Medicine
10290 W FLAMINGO RD
Las Vegas, NV 89135
  • Reassigned Medicare billing, Nevada enrollment
  • 161 clinicians in this Medicare group
NPI 1043030919 (954) 939-5000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare

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

Valley Hospital Medical Center

Acute Care Hospitals · Las Vegas, NV
2/5 CMS rating
OwnershipProprietary
CMS Certification Number290021
Location620 Shadow LaneLas Vegas, NV 89106 · Clark County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 89113 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
$88.51 typical visit price
range $57.07 – $173.24
Typical copayment $22.12 (range $14.26 – $43.31)
Most-billed visit code 99203
Established Patient
$100.60 typical visit price
range $18.27 – $140.96
Typical copayment $25.15 (range $4.56 – $35.24)
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 20

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

CHANDLER WILLIAMS
Student in an Organized Health Care Education/Training Program
6655 S CIMARRON RD STE 100
LAS VEGAS, NV 89113
Clark County (702) 853-3561
COLIN STANDIFIRD MD
Student in an Organized Health Care Education/Training Program
6655 S CIMARRON RD STE 100
LAS VEGAS, NV 89113
Clark County (702) 853-3561
MUHAMMAD HASSAN AHMAD MD
Student in an Organized Health Care Education/Training Program
6655 S CIMARRON RD STE 100
LAS VEGAS, NV 89113
Clark County (702) 853-3561
ANGEL LI MD
Emergency Medicine
6655 S CIMARRON RD STE 100
LAS VEGAS, NV 89113
Clark County (702) 233-7481
ABBAS MOHAMMADI
Student in an Organized Health Care Education/Training Program
6655 S CIMARRON RD STE 100
LAS VEGAS, NV 89113
Clark County (702) 853-3561
SNE KANJI
Student in an Organized Health Care Education/Training Program
6655 S CIMARRON RD STE 100
LAS VEGAS, NV 89113
Clark County (702) 853-3564
ZANE AHMAD-FIRAS HAMDAN MD
Student in an Organized Health Care Education/Training Program
6655 S CIMARRON RD STE 100
LAS VEGAS, NV 89113
Clark County (702) 853-3561
YAACOV DAVIDOW DO
Student in an Organized Health Care Education/Training Program
6655 S CIMARRON RD STE 100
LAS VEGAS, NV 89113
Clark County (403) 470-2765

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 William Heidman's NPI number?

The NPI number for William Heidman is 1275238016. It was assigned to this individual provider in the NPPES registry on April 3, 2023.

Where is William Heidman located?

William Heidman practices at 6655 S Cimarron Rd Ste 100, Las Vegas, NV 89113. The listed phone number is (702) 853-3561.

What is William Heidman's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is William Heidman enrolled in Medicare?

Yes. William Heidman 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 William Heidman's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Heidman reassigns Medicare benefits to Shadow Emergency Physicians PLLC (Las Vegas, NV). 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 William Heidman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is William Heidman affiliated with any hospitals?

According to CMS data, William Heidman is affiliated with Valley Hospital Medical Center.

When was this NPI record last updated?

The NPPES record for William Heidman was last updated on July 22, 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.