1. Home
  2. Directory
  3. Texas
  4. San Antonio
  5. Thoracic Surgery Cardiothoracic Vascular Surgery
  6. NPI Profile

WILLIAM MICHAEL DAVIS M.D.
NPI 1437195187
Thoracic Surgery (Cardiothoracic Vascular Surgery) in San Antonio, TX

Active since June 21, 2006PECOS EnrolledAccepts Medicare Assignment
100/100
CMS Quality Rating
4330 MEDICAL DR, SUITE 325, SAN ANTONIO, TX 78229(210) 615-7700(210) 615-1782 Get Directions Write a Review

NPPES record last updated: February 9, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Feb 9, 2022, Nov 26, 2018 (2 updates tracked since 2018).

About William Michael Davis M.d. NPPES

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

WILLIAM MICHAEL DAVIS M.D. (NPI 1437195187) is an individual thoracic surgery (cardiothoracic vascular surgery) provider in San Antonio, Texas, licensed in Texas (G8071) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Methodist Hospital, and is a graduate of Baylor College Of Medicine (1984).

NPPES Registry Identity

NPI1437195187
Entity TypeIndividualMale
Primary Taxonomy208G00000X
Provider Legal NameWILLIAM MICHAEL DAVISCredential: M.D.
Location Address4330 MEDICAL DR, SUITE 325San Antonio, TX 78229-3342
Mailing Address4330 Medical Dr, Suite 325San Antonio, TX 78229-3342 · (210) 615-7700 · Fax (210) 615-1782
Phone(210) 615-7700
Fax(210) 615-1782
Sole ProprietorNo
Medical School CMSBaylor College Of MedicineGraduated 1984
Enumeration DateJune 21, 2006
Last NPPES UpdateFebruary 9, 20222 updates tracked since enumeration
✔ NPI 1437195187 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyThoracic Surgery (Cardiothoracic Vascular Surgery)Allopathic & Osteopathic Physicians
Taxonomy Code208G00000X
License✔ Licensed in TX · G8071
Definition
A thoracic surgeon provides the operative, perioperative and critical care of patients with pathologic conditions within the chest. Included is the surgical care of coronary artery disease, cancers of the lung, esophagus and chest wall, abnormalities of the trachea, abnormalities of the great vessels and heart valves, congenital anomalies, tumors of the mediastinum and diseases of the diaphragm. The management of the airway and injuries of the chest is within the scope of the specialty.
Also ListedSpecialistTaxonomy 174400000X · License G8071 (TX)
4330 MEDICAL DR, San Antonio, TX 78229
Open in Google Maps ↗

Other Identifiers 1

Medicaid123148201TX

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Superior HealthPlan, Ambetter Health, Blue Cross and Blue Shield of Texas and more.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

William Michael Davis 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 ID6901932342
PECOS Enrollment IDI20100916000585
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 William Davis reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Cardiology Clinic Of San Antonio, PLLC
0.1 mi
Cardiovascular Disease
4411 MEDICAL DR, SUITE #300
San Antonio, TX 78229
  • Reassigned Medicare billing, Texas enrollment
  • 130 clinicians in this Medicare group
NPI 1487965000 (210) 614-5400

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 5

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.

Exclusion of appendage of left upper chamber of heart performed during other procedure on chest 33268
This is a procedure done on the heart's left upper chamber (atrium). The small pouch-like appendage is sealed off during another chest procedure. This is done to reduce the risk of blood clots forming and causing strokes.
41 services41 patients
Coronary artery bypass using artery graft, 1 graft 33533
A coronary artery bypass with one artery graft is a surgical procedure to improve blood flow to your heart. An artery from another part of your body is used to bypass a blocked or narrowed coronary artery. This can help reduce chest pain and risk of heart attack.
37 services37 patients
Harvest of vein using an endoscope 33508
Harvesting a vein using an endoscope is a procedure where a small camera is used to help surgeons remove a vein from your body. This vein is often used to bypass a blocked artery, improving blood flow to your heart.
27 services27 patients
Coronary artery bypass using vein or artery graft, 3 grafts 33519
A coronary artery bypass with 3 grafts is a surgery to improve blood flow to the heart. Veins or arteries from other parts of your body are used to bypass blocked coronary arteries. This helps to restore normal blood flow to the heart, reducing the risk of heart disease.
16 services16 patients
Coronary artery bypass using vein or artery graft, 2 grafts 33518
A coronary artery bypass with 2 grafts is a surgery to improve blood flow to your heart. A surgeon takes a healthy vein or artery from your body and attaches it to the blocked coronary artery. This creates a new path for blood to flow, bypassing the blockage.
13 services13 patients

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, TX
4/5 CMS rating
OwnershipProprietary
CMS Certification Number450388
Location7700 Floyd Curl DrSan Antonio, TX 78229 · Bexar County
Emergency services Birthing friendly

Methodist Hospital Stone Oak

Acute Care Hospitals · San Antonio, TX
4/5 CMS rating
OwnershipProprietary
CMS Certification Number670055
Location1139 E Sonterra Blvd,San Antonio, TX 78258 · Bexar County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78229 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$166.88 typical visit price
range $54.84 – $166.88
Typical copayment $41.72 (range $13.71 – $41.72)
Most-billed visit code 99205
Established Patient
$68.55 typical visit price
range $17.52 – $136.11
Typical copayment $17.13 (range $4.38 – $34.02)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

100/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Promoting Interoperability100
Improvement Activities40

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.

JAMES RICHARD GARRISON JR. M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery)
4330 MEDICAL DR, SUITE 325
SAN ANTONIO, TX 78229
Bexar County (210) 615-7700
BRIAN MICHAEL KANATZAR D.O.
Internal Medicine
4330 MEDICAL DR, STE 500
SAN ANTONIO, TX 78229
Bexar County (210) 576-5306
DR. ABHA S. GYANI M.D.
Internal Medicine
4330 MEDICAL DR, STE 500
SAN ANTONIO, TX 78229
Bexar County (210) 576-5306
MRS. STEPHANIE BRUNO APRN
Nurse Practitioner (Family)
4330 MEDICAL DR, STE 500
SAN ANTONIO, TX 78229
Bexar County (210) 558-0122
DR. LORI I GAGNON MD
Family Medicine
4330 MEDICAL DR, STE 500
SAN ANTONIO, TX 78229
Bexar County (210) 426-6230
LE'JON P TERAN APN
Nurse Practitioner (Family)
4330 MEDICAL DR, STE 500
SAN ANTONIO, TX 78229
Bexar County (210) 576-5306
SOUTH TEXAS CARDIOVASCULAR CONSULTANTS
Internal Medicine (Cardiovascular Disease)
4330 MEDICAL DR, STE 500
SAN ANTONIO, TX 78229
Bexar County (210) 692-1414
SHANNON M. GEDDES-STOWE M.D.
Internal Medicine
4330 MEDICAL DR, STE 500
SAN ANTONIO, TX 78229
Bexar County (210) 576-5306

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 William Davis's NPI number?

The NPI number for William Davis is 1437195187. It was assigned to this individual provider in the NPPES registry on June 21, 2006.

Where is William Davis located?

William Davis practices at 4330 Medical Dr Suite 325, San Antonio, TX 78229. The listed phone number is (210) 615-7700.

What is William Davis's specialty?

The primary specialty registered for this NPI is Thoracic Surgery (Cardiothoracic Vascular Surgery) with taxonomy code 208G00000X.

Is William Davis enrolled in Medicare?

Yes. William Davis 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 William Davis's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Davis reassigns Medicare benefits to Cardiology Clinic Of San Antonio, PLLC (San Antonio, TX). 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 William Davis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does William Davis accept?

Health plans from Ambetter Health, Ambetter from Superior HealthPlan, Blue Cross and Blue Shield of Texas and Oscar Insurance Company list William Davis 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 William Davis affiliated with any hospitals?

According to CMS data, William Davis is affiliated with Methodist Hospital and Methodist Hospital Stone Oak.

When was this NPI record last updated?

The NPPES record for William Davis was last updated on February 9, 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.