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CYNTHIA WELLER M.D.
NPI 1750483830
Anesthesiology in Sunnyvale, CA

Active since September 01, 2006PECOS EnrolledAccepts Medicare Assignment
301 OLD SAN FRANCISCO ROAD, SUNNYVALE, CA 94086(408) 739-6000 Get Directions Write a Review

NPPES record last updated: November 14, 2013. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Cynthia Weller M.d. NPPES

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

CYNTHIA WELLER M.D. (NPI 1750483830) is an individual anesthesiology provider in Sunnyvale, California, licensed in California (A84285) and active in the NPI registry since September 2006. She is enrolled in Medicare PECOS and is a graduate of Other (2003).

NPPES Registry Identity

NPI1750483830
Entity TypeIndividualFemale
Primary Taxonomy207L00000X
Provider Legal NameCYNTHIA WELLERCredential: M.D.
Location Address301 OLD SAN FRANCISCO ROADSunnyvale, CA 94086-6386
Mailing Address2350 W. El Camino Real, 2nd FloorMountain View, CA 94040-6203
Phone(408) 739-6000
Sole ProprietorNo
Medical School CMSOtherGraduated 2003
Enumeration DateSeptember 1, 2006
Last NPPES UpdateNovember 14, 2013
✔ NPI 1750483830 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in CA · A84285
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.
301 OLD SAN FRANCISCO ROAD, Sunnyvale, CA 94086
Open in Google Maps ↗

Other Identifiers 3

Medicare ID-Type Unspecified00A842851CA
Medicare UPINI66482CA
OtherZZZ93243ZCA · Group Medicare Id Number

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

Cynthia Weller 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 ID7911908751
PECOS Enrollment IDI20070123000145
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 Reassignments

2

Medicare enrollment records show Cynthia Weller reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Sutter Bay Medical Foundation
3.0 mi
Ambulatory Surgical
701 E EL CAMINO REAL, SUITE 1 NORTHWEST
Mountain View, CA 94040
NPI 1982845186 (650) 404-8444
San Mateo County
9.4 mi
Community/Behavioral Health
2415 UNIVERSITY AVE STE 301
East Palo Alto, CA 94303
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: County Of San Mateo
  • 597 clinicians in this Medicare group
NPI 1710086301 (650) 363-4030

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 6

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.

Anesthesia for lens surgery 00142
Anesthesia for lens surgery involves administering medication to numb the eye area, ensuring you feel no pain during the procedure. This can be a local anesthetic (numbing only the eye area) or general (where you're asleep). It helps make the surgery comfortable and stress-free.
184 services178 patients
Anesthesia for other procedure on eye 00140
Anesthesia for an eye procedure involves administering medication to numb your eye and surrounding area, ensuring you feel no pain during the operation. It can be local (only the eye area) or general (whole body). It's safe and helps make the procedure comfortable.
19 services19 patients
Anesthesia for other procedure on large bowel using an endoscope 00811
Anesthesia for an endoscopic procedure on the large bowel ensures comfort and relaxation during the procedure. You'll be given medication to make you drowsy or asleep, eliminating any discomfort. The medication can be administered through a vein or inhaled.
18 services18 patients
Anesthesia for procedure for total knee joint replacement 01402
Anesthesia for a total knee joint replacement numbs your body to eliminate pain during surgery. This could be general anesthesia where you're unconscious, or regional anesthesia where only the leg is numb. It's administered by a specialist, ensuring safety and comfort.
17 services17 patients
Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) 64447
This procedure involves injecting a numbing agent and/or steroid into a nerve in your thigh. It's done to alleviate pain or inflammation. A needle will be carefully positioned near the nerve, and the medicine will be administered.
16 services16 patients
Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 00731
This procedure involves the use of an endoscope, a flexible tube with a light and camera, to examine your esophagus, stomach, or upper small bowel. Anesthesia ensures you are comfortable and pain-free during the procedure.
12 services12 patients

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DOUGLAS A TUCKER MD
Internal Medicine
301 OLD SAN FRANCISCO ROAD
SUNNYVALE, CA 94086
Santa Clara County (408) 739-6000

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 Cynthia Weller's NPI number?

The NPI number for Cynthia Weller is 1750483830. It was assigned to this individual provider in the NPPES registry on September 1, 2006.

Where is Cynthia Weller located?

Cynthia Weller practices at 301 Old San Francisco Road, Sunnyvale, CA 94086. The listed phone number is (408) 739-6000.

What is Cynthia Weller's specialty?

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

Is Cynthia Weller enrolled in Medicare?

Yes. Cynthia Weller 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 Cynthia Weller's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Cynthia Weller reassigns Medicare benefits to 2 organizations: Sutter Bay Medical Foundation (Mountain View, CA) and San Mateo County (East Palo Alto, CA). 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 Cynthia Weller'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 Cynthia Weller was last updated on November 14, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.