DR. ADI KLEIN MD
NPI 1912929423
Hospitalist in San Antonio, TX
About Dr. Adi Klein Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ADI KLEIN MD (NPI 1912929423) is an individual hospitalist provider in San Antonio, Texas, licensed in Texas (N6427) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Baptist Medical Center, and maintains a secondary practice location in San Antonio.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 4
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. Adi Klein 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.
Medicare Billing Reassignments
10Medicare enrollment records show Adi Klein reassigns Medicare billing to 10 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Antonio, TX 78205
- Reassigned Medicare billing, Texas enrollment
- 478 clinicians in this Medicare group
San Antonio, TX 78229
- Reassigned Medicare billing, Texas enrollment
- 2,397 clinicians in this Medicare group
New Braunfels, TX 78130
- Reassigned Medicare billing, Texas enrollment
- 101 clinicians in this Medicare group
Austin, TX 78735
- Reassigned Medicare billing, Texas enrollment
- 241 clinicians in this Medicare group
Cedar Park, TX 78613
- Reassigned Medicare billing, Texas enrollment
- 828 clinicians in this Medicare group
Pflugerville, TX 78660
- Reassigned Medicare billing, Texas enrollment
- 2,795 clinicians in this Medicare group
Victoria, TX 77901
- Reassigned Medicare billing, Texas enrollment
- Medicare enrollment name: Citizens Medical Center County Of Victoria
- 171 clinicians in this Medicare group
Humble, TX 77338
- Reassigned Medicare billing, Texas enrollment
- 2,009 clinicians in this Medicare group
Mansfield, TX 76063
- Reassigned Medicare billing, Texas enrollment
- 994 clinicians in this Medicare group
Dallas, TX 75231
- Reassigned Medicare billing, Texas enrollment
- 1,208 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
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Baptist Medical Center
Acute Care Hospitals · San Antonio, TXBaptist Neighborhood Hospital Thousand Oaks
Acute Care Hospitals · San Antonio, TXResolute Health Hospital
Acute Care Hospitals · New Braunfels, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 78234 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
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.
FORT SAM HOUSTON, TX 78234
FORT SAM HOUSTON, TX 78234
FORT SAM HOUSTON, TX 78234
FORT SAM HOUSTON, TX 78234
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 Adi Klein's NPI number?
The NPI number for Adi Klein is 1912929423. It was assigned to this individual provider in the NPPES registry on July 24, 2006.
Where is Adi Klein located?
Adi Klein practices at 3551 Roger Brooke Dr, San Antonio, TX 78234. The listed phone number is (210) 916-5586.
What is Adi Klein's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Adi Klein enrolled in Medicare?
Yes. Adi Klein 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 Adi Klein's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Adi Klein reassigns Medicare benefits to 10 organizations: Sound Inpatient Physicians Of Texas I, Inc (San Antonio, TX), University Of Texas Health Science Center At San Antonio (San Antonio, TX), South Texas Physician Services, PLLC (New Braunfels, TX), Hni Medical Services (Austin, TX), Usacs Integrated Acute Care Services Of Texas, PLLC (Cedar Park, TX) and 5 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 Adi Klein's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Adi Klein accept?
Health plans from Blue Cross and Blue Shield of Texas, CHRISTUS Health Plan, Molina Healthcare, Oscar Insurance Company and Sendero Health Plans, Local Nonprofit and 1 other insurer list Adi Klein 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 Adi Klein affiliated with any hospitals?
According to CMS data, Adi Klein is affiliated with Baptist Medical Center, Baptist Neighborhood Hospital Thousand Oaks and Resolute Health Hospital.
When was this NPI record last updated?
The NPPES record for Adi Klein was last updated on July 30, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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. Adi Klein, MD · NPI 1912929423
Hospitalist physician in San Antonio, Texas. Individual provider, active in the CMS NPPES registry since July 24, 2006.
## Identity
- **NPI:** 1912929423 (Entity type: Individual)
- **Enumerated:** July 24, 2006
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** N6427 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 3551 ROGER BROOKE DR, San Antonio, TX 78234-4504
- **Phone:** (210) 916-5586 · **Fax:** (210) 916-5102
## 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:** 10 organizations under Medicare reassignment (form CMS-855R): Sound Inpatient Physicians Of Texas I, Inc (NPI 1811321797, San Antonio, TX); University Of Texas Health Science Center At San Antonio (NPI 1396717989, San Antonio, TX); South Texas Physician Services, PLLC (NPI 1598546772, New Braunfels, TX); Hni Medical Services (NPI 1366735169, Austin, TX); Usacs Integrated Acute Care Services Of Texas, PLLC (NPI 1801300322, Cedar Park, TX); and 5 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, Geffen School Of Medicine, class of 1998
## Record status
- **NPPES last updated:** July 30, 2021
- **Other identifiers:** Other 48721 (KY); Other A71260 (CA); Medicaid 214064201 (TX); and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1912929423) · Data from the CMS NPPES public registry.