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THERESA A GREBE M.D.
NPI 1346202991
Medical Genetics - Clinical Genetics (M.D.) in Phoenix, AZ

Active since April 06, 2006PECOS EnrolledAccepts Medicare Assignment
1919 E THOMAS RD, EAST BUILDING, PHOENIX, AZ 85016(602) 546-1000(602) 546-0240 Get Directions Write a Review

NPPES record last updated: June 1, 2011. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Theresa A Grebe M.d. NPPES

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

THERESA A GREBE M.D. (NPI 1346202991) is an individual clinical genetics (m.d.) provider in Phoenix, Arizona, licensed in Arizona (18774) and active in the NPI registry since April 2006. She is enrolled in Medicare PECOS and is a graduate of Pennsylvania State University College Of Medicine (1986).

NPPES Registry Identity

NPI1346202991
Entity TypeIndividualFemale
Primary Taxonomy207SG0201X
Provider Legal NameTHERESA A GREBECredential: M.D.
Location Address1919 E THOMAS RD, EAST BUILDINGPhoenix, AZ 85016-7710
Mailing Address1919 E Thomas Rd, Bldg 2108, Ste 101Phoenix, AZ 85016-7710 · (602) 546-1000 · Fax (602) 546-0240
Phone(602) 546-1000
Fax(602) 546-0240
Sole ProprietorNo
Medical School CMSPennsylvania State University College Of MedicineGraduated 1986
Enumeration DateApril 6, 2006
Last NPPES UpdateJune 1, 2011
✔ NPI 1346202991 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyMedical Genetics · Clinical Genetics (M.D.)Allopathic & Osteopathic Physicians
Taxonomy Code207SG0201X
License✔ Licensed in AZ · 18774
Definition
A clinical geneticist demonstrates competence in providing comprehensive diagnostic, management and counseling services for genetic disorders.
1919 E THOMAS RD, Phoenix, AZ 85016
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Other Identifiers 3

Medicare ID-Type Unspecified107292
Medicaid184086AZ
Medicare UPINE52291AZ

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

Theresa A Grebe 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 ID5092790444
PECOS Enrollment IDI20040621001359
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 Theresa Grebe reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Phoenix Children's Hospital
Same address
Pediatrics
1919 E THOMAS RD
Phoenix, AZ 85016
  • Reassigned Medicare billing, Arizona enrollment
  • 1,416 clinicians in this Medicare group
NPI 1922112044 (602) 933-1000

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

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.

DR. TIMUR RAGHIB M.D.
Hospitalist
1919 E THOMAS RD
PHOENIX, AZ 85016
Maricopa County (602) 933-0777
MRS. MARIA T ESCOBAR CSP, RD
Dietitian, Registered
1919 E THOMAS RD
PHOENIX, AZ 85016
Maricopa County (480) 440-2787
DR. AHMAR HUSAIN MD
Anesthesiology (Pediatric Anesthesiology)
1919 E THOMAS RD
PHOENIX, AZ 85016
Maricopa County (602) 933-4660
MRS. SOLEE R COWLEY LCSW
Social Worker (Clinical)
1919 E THOMAS RD
PHOENIX, AZ 85016
Maricopa County (602) 933-0414
MR. SEAN PATRICK BRADY DO
Anesthesiology (Pediatric Anesthesiology)
1919 E THOMAS RD
PHOENIX, AZ 85016
Maricopa County (602) 933-4660
PRIYA PRASHER M.D.
Pediatrics
1919 E THOMAS RD
PHOENIX, AZ 85016
Maricopa County (602) 933-1900
DR. AMIT RAJARAM D.O.
Pediatrics
1919 E THOMAS RD
PHOENIX, AZ 85016
Maricopa County (602) 933-0198
LAURA GARDNER HAMANT
Pediatrics (Pediatric Gastroenterology)
1919 E THOMAS RD
PHOENIX, AZ 85016
Maricopa County (602) 933-1000

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 Theresa Grebe's NPI number?

The NPI number for Theresa Grebe is 1346202991. It was assigned to this individual provider in the NPPES registry on April 6, 2006.

Where is Theresa Grebe located?

Theresa Grebe practices at 1919 E Thomas Rd East Building, Phoenix, AZ 85016. The listed phone number is (602) 546-1000.

What is Theresa Grebe's specialty?

The primary specialty registered for this NPI is Medical Genetics, specializing in Clinical Genetics (M.D.), with taxonomy code 207SG0201X.

Is Theresa Grebe enrolled in Medicare?

Yes. Theresa Grebe 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 Theresa Grebe's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Theresa Grebe reassigns Medicare benefits to Phoenix Children's Hospital (Phoenix, AZ). 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 Theresa Grebe'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 Theresa Grebe was last updated on June 1, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.