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DR. CHARLES JACOB MAYER MD
NPI 1487739298
Family Medicine in Seattle, WA

Active since October 27, 2006PECOS EnrolledAccepts Medicare Assignment
1420 5TH AVE STE 375, SEATTLE, WA 98101(206) 223-2611 Get Directions Write a Review

NPPES record last updated: April 14, 2022. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Apr 14, 2022, Apr 27, 2021 (2 updates tracked since 2021).

About Dr. Charles Jacob Mayer Md NPPES

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

DR. CHARLES JACOB MAYER MD (NPI 1487739298) is an individual family medicine provider in Seattle, Washington, licensed in Washington (MD00031331) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in Seattle, and is a graduate of Howard University College Of Medicine (1991).

NPPES Registry Identity

NPI1487739298
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameDR. CHARLES JACOB MAYERCredential: MD
Location Address1420 5TH AVE STE 375Seattle, WA 98101-4032
Mailing Address1420 5th Ave Ste 375Seattle, WA 98101-4032 · (206) 223-2611
Phone(206) 223-2611
Sole ProprietorNo
Medical School CMSHoward University College Of MedicineGraduated 1991
Enumeration DateOctober 27, 2006
Last NPPES UpdateApril 14, 20222 updates tracked since enumeration
NPPES CertifiedApril 14, 2022
✔ NPI 1487739298 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
Licenses✔ Licensed in WA · MD00031331✔ Licensed in CO · DR.0067844
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
1420 5TH AVE STE 375, Seattle, WA 98101
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Secondary Practice Location 1

Location 1University Of Washington Medical Ctr, 1959 NE Pacific StSeattle, WA 98195-0001 · Phone (206) 598-4055

Other Identifiers 2

Medicaid8182313WA
Other2000015Internal Id-motor Vehicle Id

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

Dr. Charles Jacob Mayer 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 ID749226306
PECOS Enrollment IDI20050705000802
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98101 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$97.43 typical visit price
range $63.67 – $189.37
Typical copayment $24.35 (range $15.91 – $47.34)
Most-billed visit code 99203
Established Patient
$111.00 typical visit price
range $21.12 – $155.00
Typical copayment $27.75 (range $5.28 – $38.75)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 9

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

MELISSA SZOCIK
Physician Assistant (Medical)
1420 5TH AVE STE 375
SEATTLE, WA 98101
King County (206) 223-2611
NANCY CARTER M.D.
Family Medicine
1420 5TH AVE STE 375
SEATTLE, WA 98101
King County (206) 223-2611
TIHUT P TESHOME P.A.
Physician Assistant
1420 5TH AVE STE 375
SEATTLE, WA 98101
King County (206) 223-2611
MARGURITE M STAAB P.A.
Family Medicine
1420 5TH AVE STE 375
SEATTLE, WA 98101
King County (206) 223-2611
THANUJA U LIYANARACHCHI M.D.
Family Medicine
1420 5TH AVE STE 375
SEATTLE, WA 98101
King County (206) 223-2611
JASON M THAMS
Pharmacist
1420 5TH AVE STE 375
SEATTLE, WA 98101
King County (206) 223-2611
WENDE J. WOOD M.D.
Internal Medicine
1420 5TH AVE STE 375
SEATTLE, WA 98101
King County (206) 223-2611
DR. CHRISTINE THUY NGUYEN D.O.
Family Medicine
1420 5TH AVE STE 375
SEATTLE, WA 98101
King County (206) 223-2611

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 Charles Mayer's NPI number?

The NPI number for Charles Mayer is 1487739298. It was assigned to this individual provider in the NPPES registry on October 27, 2006.

Where is Charles Mayer located?

Charles Mayer practices at 1420 5th Ave Ste 375, Seattle, WA 98101. The listed phone number is (206) 223-2611.

What is Charles Mayer's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Charles Mayer enrolled in Medicare?

Yes. Charles Mayer 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.

When was this NPI record last updated?

The NPPES record for Charles Mayer was last updated on April 14, 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.