MICHAEL ANTHONY HERZIK M.D.
NPI 1801207873
Internal Medicine in San Antonio, TX
About Michael Anthony Herzik M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL ANTHONY HERZIK M.D. (NPI 1801207873) is an individual internal medicine provider in San Antonio, Texas, licensed in Texas (R2619) and active in the NPI registry since May 2014. He is enrolled in Medicare PECOS, is affiliated with Methodist Hospital, and maintains a secondary practice location in San Antonio.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 1
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
Michael Anthony Herzik 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
3Medicare enrollment records show Michael Herzik reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Antonio, TX 78216
- Reassigned Medicare billing, Texas enrollment
- 61 clinicians in this Medicare group
San Antonio, TX 78216
- Reassigned Medicare billing, Texas enrollment
- 688 clinicians in this Medicare group
San Antonio, TX 78229
- Reassigned Medicare billing, Texas enrollment
- 681 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 4
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Methodist Hospital
Acute Care Hospitals · San Antonio, TXMethodist Hospital Stone Oak
Acute Care Hospitals · San Antonio, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 78216 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
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
SAN ANTONIO, TX 78216
SAN ANTONIO, TX 78216
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 Michael Herzik's NPI number?
The NPI number for Michael Herzik is 1801207873. It was assigned to this individual provider in the NPPES registry on May 13, 2014.
Where is Michael Herzik located?
Michael Herzik practices at 12446 West Ave Ste 200, San Antonio, TX 78216. The listed phone number is (210) 525-1668.
What is Michael Herzik's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Michael Herzik enrolled in Medicare?
Yes. Michael Herzik 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 Michael Herzik's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Herzik reassigns Medicare benefits to 3 organizations: Complete Care Medical Associates (San Antonio, TX), Ipc Healthcare Services Of Texas, PLLC (San Antonio, TX) and Hospital Medicine Services Of Tx, PLLC (San Antonio, TX). 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 Michael Herzik's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Michael Herzik accept?
Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 5 other insurers list Michael Herzik 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 Michael Herzik affiliated with any hospitals?
According to CMS data, Michael Herzik is affiliated with Methodist Hospital and Methodist Hospital Stone Oak.
When was this NPI record last updated?
The NPPES record for Michael Herzik was last updated on February 25, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.