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PAUL MICHAEL DIAZ M.D.
NPI 1982865242
Anesthesiology in San Antonio, TX

Active since June 19, 2008PECOS EnrolledAccepts Medicare Assignment
4242 MEDICAL DR, SUITE 3100, SAN ANTONIO, TX 78229(210) 615-1187(210) 614-2180 Get Directions Write a Review

NPPES record last updated: October 7, 2011. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Paul Michael Diaz M.d. NPPES

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

PAUL MICHAEL DIAZ M.D. (NPI 1982865242) is an individual anesthesiology provider in San Antonio, Texas, licensed in Texas (N9040) and active in the NPI registry since June 2008. He is enrolled in Medicare PECOS, is affiliated with Methodist Hospital, and is a graduate of University Of Texas Medical Branch At Galveston (2007).

NPPES Registry Identity

NPI1982865242
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NamePAUL MICHAEL DIAZCredential: M.D.
Location Address4242 MEDICAL DR, SUITE 3100San Antonio, TX 78229-5640
Mailing AddressPo Box 34717San Antonio, TX 78265-4717 · (210) 615-1187 · Fax (210) 614-2180
Phone(210) 615-1187
Fax(210) 614-2180
Sole ProprietorNo
Medical School CMSUniversity Of Texas Medical Branch At GalvestonGraduated 2007
Enumeration DateJune 19, 2008
Last NPPES UpdateOctober 7, 2011
✔ NPI 1982865242 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in TX · N9040
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
4242 MEDICAL DR, San Antonio, TX 78229
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Other Identifiers 1

Medicare PINTXB134793TX

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, Community First, Molina Healthcare 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

Paul Michael Diaz 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 ID7012187602
PECOS Enrollment IDI20110909002813
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 Paul Diaz reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Allen Anesthesia Associates
276 mi
Specialist
4510 MEDICAL CENTER DR STE 211
Mckinney, TX 75069
  • Reassigned Medicare billing, Texas enrollment
  • 125 clinicians in this Medicare group
NPI 1265469357 (469) 541-1600

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 8

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.

Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) 64415
This procedure involves injecting a numbing agent or steroid into your arm's nerve bundle. It's done to manage pain or inflammation. The injection helps block nerve signals that cause discomfort, providing relief. It's a safe, common procedure.
40 services39 patients
Anesthesia for electroshock therapy 00104
Anesthesia for electroshock therapy involves administering medications to put you into a deep sleep. This ensures you won't feel pain or remember the procedure. It's essential for your comfort and safety during the therapy.
23 services11 patients
Anesthesia for removal of prostate including use of an endoscope 00914
Anesthesia is used during the removal of the prostate to ensure you feel no discomfort. An endoscope, a thin tube with a camera, aids in viewing the area. This procedure involves the careful administration of medicines to help you sleep and prevent pain.
19 services18 patients
Anesthesia for open or endoscopic total shoulder joint replacement 01638
Anesthesia for total shoulder joint replacement, either open or endoscopic, involves using medications to block pain during surgery. It can be general (you're asleep) or regional (only the area being operated on is numbed). This ensures comfort and stillness, facilitating a successful procedure.
16 services16 patients
Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand 01810
Anesthesia for procedures on the forearm, wrist, and hand involves administering medication to block sensation in these areas. This helps ensure comfort and painlessness during surgeries or treatments involving nerves, muscles, tendons, and tissue in these regions.
16 services15 patients
Injection of local anesthetic for abdominal wall pain control on both sides using imaging guidance 64488
This procedure involves injecting a local anesthetic into the abdominal wall to manage pain. It's carried out on both sides of the abdomen using imaging guidance for precision. This helps numb the area, providing relief from discomfort.
16 services16 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

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

Post-Anesthetic Transfer of Care Measure: Procedure Room to a Post Anesthesia Care Unit (PACU)
Percentage of patients, regardless of age, who are under the care of an anesthesia practitioner and are admitted to a PACU or other non-ICU location in which a post-anesthetic formal transfer of care protocol or checklist which includes the key transfer of…
100%996 patients5/55-star benchmark: 100%
Prevention of Post-Operative Nausea and Vomiting (PONV) - Combination Therapy
Percentage of patients, aged 18 years and older, who undergo a procedure under an inhalational general anesthetic, AND who have three or more risk factors for post-operative nausea and vomiting (PONV), who receive combination therapy consisting of at least…
100%434 patients
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

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.

MR. ELLIOT JOSEPH CRUZ LCSW
Social Worker (Clinical)
4242 MEDICAL DR, 7100
SAN ANTONIO, TX 78229
Bexar County (210) 216-2739
DOCTOR AT YOUR SERVICE PLLC
Family Medicine
4242 MEDICAL DR, SUITE 6250
SAN ANTONIO, TX 78229
Bexar County (210) 479-3297
SCOTT TAYLOR KANE M.D.
Anesthesiology
4242 MEDICAL DR, SUITE 3100
SAN ANTONIO, TX 78229
Bexar County (210) 615-1187
MARK E CRUM M.D.
Anesthesiology
4242 MEDICAL DR, SUITE 3100
SAN ANTONIO, TX 78229
Bexar County (210) 615-1187
SAVITHA SEHGAL MD
Anesthesiology
4242 MEDICAL DR, SUITE 3100
SAN ANTONIO, TX 78229
Bexar County (210) 615-1187
R. BRADEN NEIMAN, MD PA
Psychiatry & Neurology (Neurology)
4242 MEDICAL DR, #6100
SAN ANTONIO, TX 78229
Bexar County (210) 692-1245
JESSICA P. EDWARDS M.D.
Anesthesiology
4242 MEDICAL DR, SUITE 3100
SAN ANTONIO, TX 78229
Bexar County (210) 615-1187
GORDANA GLIGORIC MD
Allergy & Immunology
4242 MEDICAL DR, SUITE 6100
SAN ANTONIO, TX 78229
Bexar County (210) 807-3889

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 Paul Diaz's NPI number?

The NPI number for Paul Diaz is 1982865242. It was assigned to this individual provider in the NPPES registry on June 19, 2008.

Where is Paul Diaz located?

Paul Diaz practices at 4242 Medical Dr Suite 3100, San Antonio, TX 78229. The listed phone number is (210) 615-1187.

What is Paul Diaz's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Paul Diaz enrolled in Medicare?

Yes. Paul Diaz 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 Paul Diaz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Paul Diaz reassigns Medicare benefits to Allen Anesthesia Associates (Mckinney, 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 Paul Diaz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Paul Diaz accept?

Health plans from Blue Cross and Blue Shield of Texas, Community First, Molina Healthcare, Oscar Insurance Company and UnitedHealthcare list Paul Diaz 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 Paul Diaz affiliated with any hospitals?

According to CMS data, Paul Diaz is affiliated with Methodist Hospital and Methodist Hospital Stone Oak.

When was this NPI record last updated?

The NPPES record for Paul Diaz was last updated on October 7, 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.