1. Home
  2. Directory
  3. Nevada
  4. Las Vegas
  5. Internal Medicine
  6. NPI Profile

INTERNAL MEDICINE SPECIALISTS OF SOUTHERN NEVADA
NPI 1013917640
Internal Medicine in Las Vegas, NV

Active since July 26, 2005CLIA 29D0675935 · Waiver
201 N BUFFALO DR, LAS VEGAS, NV 89145(702) 242-2737(702) 255-3170 Get Directions Write a Review

NPPES record last updated: October 2, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Internal Medicine Specialists Of Southern Nevada NPPES

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

INTERNAL MEDICINE SPECIALISTS OF SOUTHERN NEVADA (NPI 1013917640) is a healthcare organization registered as an internal medicine in Las Vegas, Nevada and active in the NPI registry since July 2005. The organization holds a CLIA Waiver certificate valid through April 3, 2027 and lists Babak Ghadishah, President, as its authorized official.

NPPES Registry Identity

NPI1013917640
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameINTERNAL MEDICINE SPEC OF SOUTHERN NV GROSSMAN PANIKKAR GHADISHAH WHI
Location Address201 N BUFFALO DRLas Vegas, NV 89145-0373
Mailing Address201 N Buffalo DrLas Vegas, NV 89145-0373 · (702) 242-2737 · Fax (702) 255-3170
Phone(702) 242-2737
Fax(702) 255-3170
Organization SubpartNo
Authorized OfficialBabak GhadishahPresident · (702) 242-2737
Enumeration DateJuly 26, 2005
Last NPPES UpdateOctober 2, 2023
NPPES CertifiedOctober 2, 2023
✔ NPI 1013917640 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
201 N BUFFALO DR, Las Vegas, NV 89145
Open in Google Maps ↗

Other Names 1

Doing Business AsInternal Medicine Specialists Of Southern Nevada

Other Identifiers 1

Medicaid100501810NV

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Internal Medicine Specialists Of Southern Nevada is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by November 30, 2026

Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.

StateEnrollment IDDue date
StateNevadaEnrollment IDO20040504000718Non-DME Part B · Clinic/Group PracticeDue dateNovember 30, 2026
Source: CMS Revalidation Due Date List, October 2026 release.

Clinicians Billing Medicare Through This Organization

9

Medicare enrollment records show 9 clinicians reassign Medicare billing to Internal Medicine Specialists Of Southern Nevada, which bills Medicare for the services they deliver. Of these, 2 practice at this address and 7 within 10 miles. They are listed nearest first.

Clinicians, nearest first (9)

Babak Ghadishah, D.O.
Internal Medicine
NPI 1346272408
201 N BUFFALO DR
Las Vegas, NV 89145
(702) 242-2737
✔ PECOS✔ Accepts MedicareSame address
Gary Grossman, M.D.
Internal Medicine
NPI 1487679445
201 N BUFFALO DR
Las Vegas, NV 89145
(702) 242-2737
✔ PECOS✔ Accepts MedicareSame address
Matthew Pham, MD
Internal Medicine
NPI 1003917055
500 N RAINBOW BLVD SUITE 300
Las Vegas, NV 89107
(702) 450-1717
✔ PECOS✔ Accepts Medicare1.1 mi
David Rosenstein, M.D.
Internal Medicine
NPI 1518001551
851 S RAMPART BLVD STE 155
Las Vegas, NV 89145
(725) 269-4050
✔ PECOS✔ Accepts Medicare2.0 mi
Amanda Aydin, FNP-C
Nurse Practitioner
NPI 1821363144
10161 PARK RUN DR STE 150
Las Vegas, NV 89145
(702) 707-3919
✔ PECOS✔ Accepts Medicare3.3 mi
Jennifer Cribb, NURSE PRACTITIONER
Nurse Practitioner
NPI 1093047086
5536 S FORT APACHE RD STE 102
Las Vegas, NV 89148
(702) 456-8299
✔ PECOS✔ Accepts Medicare6.3 mi
Pejman Kharazi, M.D.
Family Practice
NPI 1669763488
1900 E DESERT INN RD
Las Vegas, NV 89169
(702) 425-6125
✔ PECOS✔ Accepts Medicare8.1 mi
Thomas Alfreda, DO
Internal Medicine
NPI 1487824041
2779 W HORIZON RIDGE PKWY STE 207
Henderson, NV 89052
(702) 666-8645
✔ PECOS✔ Accepts Medicare15 mi
Dyllen Grossman, D.O.
Internal Medicine
NPI 1467802082
10624 S EASTERN AVE # A-955
Henderson, NV 89052
(702) 800-5393
✔ PECOS✔ Accepts Medicare15 mi

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

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 29D0675935

Internal Medicine Specialists Of So Nv · Las Vegas, NV
Active · expires Apr 3, 2027
CLIA Number29D0675935
Laboratory TypePhysician Office
Certificate Effective DateApril 4, 2025
Certificate Expiration DateApril 3, 2027
Laboratory DirectorGary J. Grossman MD
Laboratory Phone(702) 242-2737
Laboratory LocationInternal Medicine Specialists Of So Nv201 N Buffalo Dr, Las Vegas, NV 89145
CLIA data matches this NPI record on: Address Phone
This certificate is issued to a laboratory to perform only waived tests.

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 Internal Medicine Spec Of Southern Nv Grossman Panikkar Ghadishah Whi's NPI number?

The NPI number for Internal Medicine Spec Of Southern Nv Grossman Panikkar Ghadishah Whi is 1013917640. It was assigned to this organization in the NPPES registry on July 26, 2005. The provider is doing business as Internal Medicine Specialists Of Southern Nevada.

Where is Internal Medicine Spec Of Southern Nv Grossman Panikkar Ghadishah Whi located?

Internal Medicine Spec Of Southern Nv Grossman Panikkar Ghadishah Whi is located at 201 N Buffalo Dr, Las Vegas, NV 89145. The listed phone number is (702) 242-2737.

What is Internal Medicine Spec Of Southern Nv Grossman Panikkar Ghadishah Whi's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Internal Medicine Spec Of Southern Nv Grossman Panikkar Ghadishah Whi enrolled in Medicare?

Yes. Internal Medicine Spec Of Southern Nv Grossman Panikkar Ghadishah Whi is registered in the Medicare PECOS enrollment system.

When is Internal Medicine Spec Of Southern Nv Grossman Panikkar Ghadishah Whi's Medicare revalidation due?

According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (Nevada, Clinic/Group Practice) is due for revalidation by November 30, 2026. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.

How many clinicians bill Medicare through Internal Medicine Spec Of Southern Nv Grossman Panikkar Ghadishah Whi?

According to the CMS Revalidation Reassignment List (October 2026 release), 9 clinicians in 3 Medicare specialties reassign their Medicare billing to Internal Medicine Spec Of Southern Nv Grossman Panikkar Ghadishah Whi. A 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 the clinician's services. The largest specialties are Internal Medicine (6), Nurse Practitioner (2) and Family Practice (1). Of these, 2 practice at this address and 7 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Internal Medicine Spec Of Southern Nv Grossman Panikkar Ghadishah Whi hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 29D0675935) is associated with this NPI, valid through April 3, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Internal Medicine Spec Of Southern Nv Grossman Panikkar Ghadishah Whi was last updated on October 2, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.