1. Home
  2. Directory
  3. Oregon
  4. Portland
  5. Anesthesiology
  6. NPI Profile

TAMMY MAI D.O.
NPI 1275821902
Anesthesiology in Portland, OR

Active since July 15, 2011PECOS EnrolledAccepts Medicare Assignment
707 SW WASHINGTON ST, SUITE 700, PORTLAND, OR 97205(503) 299-9906(503) 225-9002 Get Directions Write a Review

NPPES record last updated: December 8, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Dec 8, 2025, Jan 5, 2022, Oct 17, 2018 and 1 more (4 updates tracked since 2015).

About Tammy Mai D.o. NPPES

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

TAMMY MAI D.O. (NPI 1275821902) is an individual anesthesiology provider in Portland, Oregon, licensed in Oregon (DO173813) and active in the NPI registry since July 2011. She is enrolled in Medicare PECOS, is affiliated with Good Samaritan Regional Medical Center, and maintains a secondary practice location in Corvallis.

NPPES Registry Identity

NPI1275821902
Entity TypeIndividualFemale
Primary Taxonomy207L00000X
Provider Legal NameTAMMY MAICredential: D.O.
Location Address707 SW WASHINGTON ST, SUITE 700Portland, OR 97205-3536
Mailing AddressPo Box 35147, #1801Seattle, WA 98124-5147 · (503) 299-9906 · Fax (503) 225-9002
Phone(503) 299-9906
Fax(503) 225-9002
Sole ProprietorYes
Medical School CMSUniversity Of North Texas Hsc, College Of Osteopathic MedGraduated 2010
Enumeration DateJuly 15, 2011
Last NPPES UpdateDecember 8, 20254 updates tracked since enumeration
NPPES CertifiedDecember 8, 2025
✔ NPI 1275821902 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
Licenses✔ Licensed in OR · DO173813✔ Licensed in MO · 2011015606
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.
707 SW WASHINGTON ST, Portland, OR 97205
Open in Google Maps ↗

Secondary Practice Location 1

Location 13600 NW Samaritan DrCorvallis, OR 97330-5472 · Phone (541) 768-5111

Other Identifiers 1

Medicaid500693239OR

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Tammy Mai D.o. 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 ID3971730136
PECOS Enrollment IDI20151029001785
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.

Areas of Expertise CMS Part B claims 5

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.

Ultrasound of heart with probe in esophagus, with report 93312
This procedure, called a transesophageal echocardiogram, uses a small probe passed into your esophagus to capture detailed images of your heart. The report provides information about your heart's structure and function.
22 services21 patients
Anesthesia for x-ray on artery of brain, heart, or chest 01926
Anesthesia is given before an x-ray of the brain, heart, or chest artery to ensure comfort and stillness. It helps to eliminate discomfort or pain during the procedure. It's administered by a trained professional, ensuring a safe and smooth procedure.
21 services20 patients
Ultrasound of heart blood flow, valves and chambers 93320
An ultrasound of your heart, also known as an echocardiogram, is a test that uses sound waves to create detailed images of your heart. It helps doctors check the health of your heart's chambers, valves, and blood flow.
21 services20 patients
Ultrasound of heart with color-depicted blood flow, rate and valve function 93325
An ultrasound of the heart, also known as an echocardiogram, uses sound waves to create pictures of your heart. It shows the structure, movement, and blood flow within your heart. This helps assess the heart's health and function, including the valves and rate.
21 services20 patients
Insertion of artery tube for blood sampling or infusion through skin 36620
This procedure involves placing a small tube into an artery, usually in the wrist or elbow, to collect blood samples or administer medication. It's done under local anesthesia and is a common, safe practice.
12 services12 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Good Samaritan Regional Medical Center

Acute Care Hospitals · Corvallis, OR
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number380014
Location3600 NW Samaritan DriveCorvallis, OR 97330 · Benton County
Emergency services Birthing friendly

Legacy Good Samaritan Medical Center

Acute Care Hospitals · Portland, OR
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number380017
Location1015 NW 22nd Avenue, W121Portland, OR 97210 · Multnomah County
Emergency services Birthing friendly

Salem Hospital

Acute Care Hospitals · Salem, OR
4/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number380051
Location890 Oak Street, SESalem, OR 97301 · Marion County
Emergency services Birthing friendly

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.

DR. JEFFREY PHILIP MAKO M.D.
Anesthesiology
707 SW WASHINGTON ST, SUITE 700
PORTLAND, OR 97205
Multnomah County (503) 299-9906
DR. PATRICIA N PANCOAST MD
Anesthesiology
707 SW WASHINGTON ST, STE 700
PORTLAND, OR 97205
Multnomah County (503) 299-9906
DR. XIANGHUA PAN MD
Anesthesiology
707 SW WASHINGTON ST, STE 700
PORTLAND, OR 97205
Multnomah County (503) 299-9906
DR. BRENT D. ANDERSEN MD
Anesthesiology
707 SW WASHINGTON ST, SUITE 700
PORTLAND, OR 97205
Multnomah County (503) 299-9906
DR. MATTHEW BUCKON MD
Anesthesiology
707 SW WASHINGTON ST, SUITE 700
PORTLAND, OR 97205
Multnomah County (503) 299-9906
DR. NIKKI B JAWORSKI M.D.
Anesthesiology
707 SW WASHINGTON ST, SUITE 700
PORTLAND, OR 97205
Multnomah County (503) 299-9906
DR. JONATHAN T. GUDMAN MD
Anesthesiology
707 SW WASHINGTON ST, SUITE 700
PORTLAND, OR 97205
Multnomah County (503) 299-9906
DR. MATTHEW S.A. BOLES MD
Anesthesiology
707 SW WASHINGTON ST, STE 700
PORTLAND, OR 97205
Multnomah County (503) 299-9906

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 Tammy Mai's NPI number?

The NPI number for Tammy Mai is 1275821902. It was assigned to this individual provider in the NPPES registry on July 15, 2011.

Where is Tammy Mai located?

Tammy Mai practices at 707 SW Washington St Suite 700, Portland, OR 97205. The listed phone number is (503) 299-9906.

What is Tammy Mai's specialty?

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

Is Tammy Mai enrolled in Medicare?

Yes. Tammy Mai 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.

Is Tammy Mai affiliated with any hospitals?

According to CMS data, Tammy Mai is affiliated with Good Samaritan Regional Medical Center, Legacy Good Samaritan Medical Center and Salem Hospital.

When was this NPI record last updated?

The NPPES record for Tammy Mai was last updated on December 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months 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.