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RICHARD A. TIMMERMAN JR. P.A.
NPI 1083809552
Physician Assistant in Mission Viejo, CA

Active since September 07, 2007PECOS Enrolled
27700 MEDICAL CENTER RD, MISSION VIEJO, CA 92691(949) 364-1400(949) 365-4941 Get Directions Write a Review

NPPES record last updated: September 7, 2007. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Richard A. Timmerman Jr. P.a. NPPES

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

RICHARD A. TIMMERMAN JR. P.A. (NPI 1083809552) is an individual physician assistant in Mission Viejo, California, licensed in California (PA19082) and active in the NPI registry since September 2007. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1083809552
Entity TypeIndividualMale
Primary Taxonomy363A00000X
Provider Legal NameRICHARD A. TIMMERMAN JR.Credential: P.A.
Location Address27700 MEDICAL CENTER RDMission Viejo, CA 92691-6426
Mailing AddressPo Box 660099Arcadia, CA 91066-0099 · (626) 447-0296 · Fax (626) 447-6057
Phone(949) 364-1400
Fax(949) 365-4941
Sole ProprietorNo
Enumeration DateSeptember 7, 2007
✔ NPI 1083809552 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
License✔ Licensed in CA · PA19082
Definition
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
27700 MEDICAL CENTER RD, Mission Viejo, CA 92691
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Richard A. Timmerman Jr. P.a. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 92691 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
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
Most-billed visit code 99213
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 20

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

CHELSEA ZIMMERMAN
Nurse Practitioner (Acute Care)
27700 MEDICAL CENTER RD
MISSION VIEJO, CA 92691
Orange County (949) 364-1400
MISSION HOSPITAL REGIONAL MEDICAL CENTER
Rehabilitation Hospital
27700 MEDICAL CENTER RD
MISSION VIEJO, CA 92691
Orange County (949) 364-1400
LAUREN ELIZABETH VENTO PA-C
Physician Assistant
27700 MEDICAL CENTER RD
MISSION VIEJO, CA 92691
Orange County (949) 364-1400
JOHN ERIC MELLOTT P.A.
Physician Assistant
27700 MEDICAL CENTER RD
MISSION VIEJO, CA 92691
Orange County (949) 364-1400
DHP OF MISSION MEDICAL GROUP INC
Orthopaedic Surgery
27700 MEDICAL CENTER RD
MISSION VIEJO, CA 92691
Orange County (949) 364-1400
MS. BRENDI M GAYLE AG-ACNP
Nurse Practitioner (Acute Care)
27700 MEDICAL CENTER RD
MISSION VIEJO, CA 92691
Orange County (949) 364-1400
MISSION VIEJO EMERGENCY MEDICAL ASSOCIATES
Emergency Medicine
27700 MEDICAL CENTER RD
MISSION VIEJO, CA 92691
Orange County (844) 474-4019
DR. JIMMY TON M.D.
Radiology (Vascular & Interventional Radiology)
27700 MEDICAL CENTER RD
MISSION VIEJO, CA 92691
Orange County (949) 364-1400

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 Richard Timmerman's NPI number?

The NPI number for Richard Timmerman is 1083809552. It was assigned to this individual provider in the NPPES registry on September 7, 2007.

Where is Richard Timmerman located?

Richard Timmerman practices at 27700 Medical Center Rd, Mission Viejo, CA 92691. The listed phone number is (949) 364-1400.

What is Richard Timmerman's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is Richard Timmerman enrolled in Medicare?

Yes. Richard Timmerman is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Richard Timmerman was last updated on September 7, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.