1. Home
  2. Directory
  3. California
  4. San Francisco
  5. Anesthesiology
  6. NPI Profile

DR. MIRIAM CASTRO M.D.
NPI 1982927471
Anesthesiology in San Francisco, CA

Active since March 11, 2010PECOS EnrolledAccepts Medicare Assignment
450 STANYAN ST DEPT OF, SAN FRANCISCO, CA 94117(206) 818-8429 Get Directions Write a Review

NPPES record last updated: July 21, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 21, 2022, Feb 11, 2022, Aug 2, 2017 (3 updates tracked since 2017).

About Dr. Miriam Castro M.d. NPPES

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

DR. MIRIAM CASTRO M.D. (NPI 1982927471) is an individual anesthesiology provider in San Francisco, California, licensed in California (A110778) and active in the NPI registry since March 2010. She is enrolled in Medicare PECOS and is a graduate of University Of Washington School Of Medicine (2008).

NPPES Registry Identity

NPI1982927471
Entity TypeIndividualFemale
Primary Taxonomy207L00000X
Provider Legal NameDR. MIRIAM CASTROCredential: M.D.
Location Address450 STANYAN ST DEPT OFSan Francisco, CA 94117-1019
Mailing Address450 Stanyan Street, Department Of AnesthesiologySan Francisco, CA 94117 · (206) 818-8429
Phone(206) 818-8429
Sole ProprietorYes
Medical School CMSUniversity Of Washington School Of MedicineGraduated 2008
Enumeration DateMarch 11, 2010
Last NPPES UpdateJuly 21, 20223 updates tracked since enumeration
✔ NPI 1982927471 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in CA · A110778
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.
450 STANYAN ST DEPT OF, San Francisco, CA 94117
Open in Google Maps ↗

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. Miriam Castro 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 ID5698922979
PECOS Enrollment IDI20120821000567
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 Miriam Castro reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Permanente Medical Group Inc
1.0 mi
Internal Medicine
2238 GEARY
San Francisco, CA 94116
  • Reassigned Medicare billing, California enrollment
  • 20,078 clinicians in this Medicare group
NPI 1841373800 (415) 833-2200

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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…
99%162 patients4/55-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…
99%116 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.

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 Miriam Castro's NPI number?

The NPI number for Miriam Castro is 1982927471. It was assigned to this individual provider in the NPPES registry on March 11, 2010.

Where is Miriam Castro located?

Miriam Castro practices at 450 Stanyan St Dept Of, San Francisco, CA 94117. The listed phone number is (206) 818-8429.

What is Miriam Castro's specialty?

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

Is Miriam Castro enrolled in Medicare?

Yes. Miriam Castro 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 Miriam Castro's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Miriam Castro reassigns Medicare benefits to Permanente Medical Group Inc (San Francisco, CA). 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 Miriam Castro's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Miriam Castro was last updated on July 21, 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.