ETHAN AOLPHUS NICHOLLS M.D.
NPI 1801805106
Anesthesiology in Fremont, CA

Q: What is Ethan Nicholls's NPI number?

The NPI number for Ethan Nicholls is 1801805106. It was assigned to this individual provider in the NPPES registry on August 5, 2006.

Q: What is Ethan Nicholls's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Ethan Nicholls was last updated on May 29, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.

Active since August 05, 2006PECOS EnrolledAccepts Medicare Assignment

3200 KEARNEY ST, FREMONT, CA 94538(510) 490-1222 Get Directions Write a Review

NPPES record last updated: May 29, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Ethan Aolphus Nicholls M.d. NPPES

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

ETHAN AOLPHUS NICHOLLS M.D. (NPI 1801805106) is an individual anesthesiology provider in Fremont, California, licensed in California (G67915) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1988).

NPPES Registry Identity

NPI1801805106

Entity TypeIndividualMale

Primary Taxonomy207L00000X

Provider Legal NameETHAN AOLPHUS NICHOLLSCredential: M.D.

Location Address3200 KEARNEY STFremont, CA 94538-2299

Mailing Address325 Distel CirLos Altos, CA 94022-1408 · (510) 490-1222

Phone(510) 490-1222

Sole ProprietorNo

Medical School CMSOtherGraduated 1988

Enumeration DateAugust 5, 2006

Last NPPES UpdateMay 29, 2020

NPPES CertifiedMay 29, 2020

✔ NPI 1801805106 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians

Taxonomy Code207L00000X

License✔ Licensed in CA · G67915

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.

3200 KEARNEY ST, Fremont, CA 94538

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Other Identifiers 1

Medicaid00G679150CA

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

Ethan Aolphus Nicholls 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 ID4789625187

PECOS Enrollment IDI20050516000956

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 Ethan Nicholls reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Sutter Bay Medical Foundation

0.1 mi

Ambulatory Surgical

3140 KEARNEY ST
Fremont, CA 94538

Reassigned Medicare billing, California enrollment
Also billed through NPI 1013950807 (California), NPI 1104067115 (California), NPI 1982845186 (California)
313 clinicians in this Medicare group

NPI 1497996524 (510) 498-2819

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.

121 services114 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.

55 services55 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.

18 services16 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.

17 services17 patients

Anesthesia for procedure on small and large bowel using an endoscope 00813

Anesthesia for an endoscopic procedure on the small and large bowel ensures comfort and relaxation during the procedure. It involves administering medicine to help you sleep or feel drowsy. This allows the doctor to examine your bowels without causing you discomfort or pain.

15 services15 patients

Anesthesia for fragmenting, manipulation and/or removal of kidney stone including use of an endoscope 00918

This procedure involves using anesthesia to ensure comfort while a special instrument called an endoscope helps to locate, break up, and possibly remove kidney stones. The endoscope is a thin, flexible tube which is gently inserted and navigated to the area of concern.

11 services11 patients

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.

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