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DEBORAH LYNN FRETWELL MD
NPI 1669869806
Anesthesiology in Stanford, CA

Active since April 24, 2015PECOS EnrolledAccepts Medicare Assignment
80.58/100
CMS Quality Rating
300 PASTEUR DRIVE, ROOM H3589, STANFORD, CA 94305(650) 498-4899(650) 725-0009 Get Directions Write a Review

NPPES record last updated: August 1, 2019. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 1, 2019, Mar 9, 2019 (2 updates tracked since 2019).

About Deborah Lynn Fretwell Md NPPES

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

DEBORAH LYNN FRETWELL MD (NPI 1669869806) is an individual anesthesiology provider in Stanford, California, licensed in California (A146561) and active in the NPI registry since April 2015. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Stanford University School Of Medicine (2015).

NPPES Registry Identity

NPI1669869806
Entity TypeIndividualFemale
Primary Taxonomy207L00000X
Provider Legal NameDEBORAH LYNN FRETWELLCredential: MD
Location Address300 PASTEUR DRIVE, ROOM H3589Stanford, CA 94305-5640
Mailing Address300 Pasteur Drive, Room H3589Stanford, CA 94305-5640 · (650) 498-4899 · Fax (650) 725-0009
Phone(650) 498-4899
Fax(650) 725-0009
Sole ProprietorYes
Medical School CMSStanford University School Of MedicineGraduated 2015
Enumeration DateApril 24, 2015
Last NPPES UpdateAugust 1, 20192 updates tracked since enumeration
✔ NPI 1669869806 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in CA · A146561
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.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
300 PASTEUR DRIVE, Stanford, CA 94305
Open in Google Maps ↗

Secondary Practice Locations 2

Location 11721 E 19th Ave Ste 520Denver, CO 80218-1243 · Phone (303) 839-6741
Location 2200 West Arbor Drive, MC 8770San Diego, CA 92103 · Phone (619) 543-5297

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

Deborah Lynn Fretwell Md 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 ID9234462243
PECOS Enrollment IDI20190606001300
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 Deborah Fretwell reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

County Of Santa Clara
2.0 mi
Mental Health (Including Community Mental Health Center)
231 GRANT AVENUE
Palo Alto, CA 94306
  • Reassigned Medicare billing, California enrollment
  • Also billed through NPI 1588721500 (California), NPI 1629301346 (California)
  • 2,460 clinicians in this Medicare group
NPI 1144330614 (650) 321-5545

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.

80.58/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality67.43
Promoting Interoperability100
Improvement Activities40
Cost46.5

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.

ANDREA LORENZE M.D.
Hospitalist
300 PASTEUR DRIVE, LANE 154
STANFORD, CA 94305
Santa Clara County (650) 723-6661
MARTINA LEFTEROVA M.D., PH.D.
Pathology (Clinical Pathology/Laboratory Medicine)
300 PASTEUR DRIVE, LANE 235
STANFORD, CA 94305
Santa Clara County (650) 725-8383
DR. JEFFREY XING MD, PHD
Radiology (Diagnostic Radiology)
300 PASTEUR DRIVE, H1330, MC: 5621
STANFORD, CA 94305
Santa Clara County (650) 723-7816
DR. MICHAEL B FOWLER MB, FRCP
Internal Medicine (Cardiovascular Disease)
300 PASTEUR DRIVE, FALK CVRC 295
STANFORD, CA 94305
Santa Clara County (650) 723-7846
ARIAN MANSUR
Student in an Organized Health Care Education/Training Program
300 PASTEUR DRIVE
STANFORD, CA 94305
Santa Clara County (650) 723-5948
ERIK WILLIAM NOHR MD
Pathology (Molecular Genetic Pathology)
300 PASTEUR DRIVE, ROOM L235, MC:5324
STANFORD, CA 94305
Santa Clara County (650) 723-5252
DR. SAMUEL J. S. RUBIN PHD, MD
Student in an Organized Health Care Education/Training Program
300 PASTEUR DRIVE, LANE 154
STANFORD, CA 94305
Santa Clara County (650) 723-6661
ALAN LYNN RINGOLD MD
Psychiatry & Neurology (Psychiatry)
300 PASTEUR DRIVE
STANFORD, CA 94305
Santa Clara County (650) 723-4000

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 Deborah Fretwell's NPI number?

The NPI number for Deborah Fretwell is 1669869806. It was assigned to this individual provider in the NPPES registry on April 24, 2015.

Where is Deborah Fretwell located?

Deborah Fretwell practices at 300 Pasteur Drive Room H3589, Stanford, CA 94305. The listed phone number is (650) 498-4899.

What is Deborah Fretwell's specialty?

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

Is Deborah Fretwell enrolled in Medicare?

Yes. Deborah Fretwell 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 Deborah Fretwell's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Deborah Fretwell reassigns Medicare benefits to County Of Santa Clara (Palo Alto, 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 Deborah Fretwell'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 Deborah Fretwell was last updated on August 1, 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.