DR. DAVID ALLEN HORWITZ M.D.
NPI 1942512199
Internal Medicine in Scottsdale, AZ
About Dr. David Allen Horwitz M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. DAVID ALLEN HORWITZ M.D. (NPI 1942512199) is an individual internal medicine provider in Scottsdale, Arizona, licensed in Arizona (46694) and active in the NPI registry since July 2010. He is enrolled in Medicare PECOS, is affiliated with Gila Regional Medical Center, and is a graduate of St. Louis College Of Physicians And Surgeons (2010).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
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. David Allen Horwitz 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.
Medicare Billing Reassignments
16Medicare enrollment records show David Horwitz reassigns Medicare billing to 16 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Tempe, AZ 85288
- Reassigned Medicare billing, Arizona enrollment
- 367 clinicians in this Medicare group
Phoenix, AZ 85034
- Reassigned Medicare billing, Arizona enrollment
- 43 clinicians in this Medicare group
Mesa, AZ 85206
- Reassigned Medicare billing, Arizona enrollment
- 289 clinicians in this Medicare group
Maricopa, AZ 85139
- Reassigned Medicare billing, Arizona enrollment
- 159 clinicians in this Medicare group
Eloy, AZ 85131
- Reassigned Medicare billing, Arizona enrollment
- 70 clinicians in this Medicare group
Prescott, AZ 86301
- Reassigned Medicare billing, Arizona enrollment
- 123 clinicians in this Medicare group
Yuma, AZ 85365
- Reassigned Medicare billing, Arizona enrollment
- 147 clinicians in this Medicare group
Sierra Vista, AZ 85635
- Reassigned Medicare billing, Arizona enrollment
- 372 clinicians in this Medicare group
Bullhead City, AZ 86442
- Reassigned Medicare billing, Arizona enrollment
- 147 clinicians in this Medicare group
Dallas, TX 75244
- Reassigned Medicare billing, Arkansas enrollment
- 69 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Gila Regional Medical Center
Critical Access Hospitals · Silver City, NMPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 85254 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 David Horwitz's NPI number?
The NPI number for David Horwitz is 1942512199. It was assigned to this individual provider in the NPPES registry on July 3, 2010.
Where is David Horwitz located?
David Horwitz practices at 14633 N 58th St, Scottsdale, AZ 85254. The listed phone number is (650) 785-2545.
What is David Horwitz's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is David Horwitz enrolled in Medicare?
Yes. David Horwitz 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 David Horwitz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), David Horwitz reassigns Medicare benefits to 16 organizations: Nextcare Arizona LLC (Tempe, AZ), American Current Care Of Arizona PA (Phoenix, AZ), Emergency Physicians Southwest, PC (Mesa, AZ), Exceptional Physicians Group Arizona PLLC (Maricopa, AZ), Exceptional Physicians Group Eloy Hospital PLLC (Eloy, AZ) and 11 more organizations, listed in the Medicare section above. 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 David Horwitz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does David Horwitz accept?
Health plans from Blue Cross Blue Shield of Arizona, Cigna HealthCare of Arizona, Inc, Oscar Health Plan, Inc. and Oscar Insurance Company list David Horwitz as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is David Horwitz affiliated with any hospitals?
According to CMS data, David Horwitz is affiliated with Gila Regional Medical Center.
When was this NPI record last updated?
The NPPES record for David Horwitz was last updated on June 23, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Dr. David Allen Horwitz, M.D. · NPI 1942512199
Internal Medicine physician in Scottsdale, Arizona. Individual provider, active in the CMS NPPES registry since July 3, 2010.
## Identity
- **NPI:** 1942512199 (Entity type: Individual)
- **Enumerated:** July 3, 2010
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 46694 (Arizona)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 14633 N 58TH ST, Scottsdale, AZ 85254-2470
- **Phone:** (650) 785-2545
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 16 organizations under Medicare reassignment (form CMS-855R): Nextcare Arizona LLC (NPI 1043371826, Tempe, AZ); American Current Care Of Arizona PA (NPI 1780873307, Phoenix, AZ); Emergency Physicians Southwest, PC (NPI 1912053752, Mesa, AZ); Exceptional Physicians Group Arizona PLLC (NPI 1447910229, Maricopa, AZ); Exceptional Physicians Group Eloy Hospital PLLC (NPI 1760203855, Eloy, AZ); and 11 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** St. Louis College Of Physicians And Surgeons, class of 2010
## Record status
- **NPPES last updated:** June 23, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1942512199) · Data from the CMS NPPES public registry.