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DR. KEITH L MARTIN M.D.
NPI 1649280546
Internal Medicine - Gastroenterology in Yorba Linda, CA

Active since August 09, 2006PECOS EnrolledAccepts Medicare Assignment
16671 YORBA LINDA BLVD, SUITE 200, YORBA LINDA, CA 92886(714) 996-3700(714) 961-7839 Get Directions Write a Review

NPPES record last updated: May 6, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Keith L Martin M.d. NPPES

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

DR. KEITH L MARTIN M.D. (NPI 1649280546) is an individual gastroenterology provider in Yorba Linda, California, licensed in California (G30724) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Oklahoma College Of Medicine (1975).

NPPES Registry Identity

NPI1649280546
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDR. KEITH L MARTINCredential: M.D.
Location Address16671 YORBA LINDA BLVD, SUITE 200Yorba Linda, CA 92886-2025
Mailing Address16671 Yorba Linda Blvd, Suite 200Yorba Linda, CA 92886-2025 · (714) 996-3700 · Fax (714) 961-7839
Phone(714) 996-3700
Fax(714) 961-7839
Sole ProprietorNo
Medical School CMSUniversity Of Oklahoma College Of MedicineGraduated 1975
Enumeration DateAugust 9, 2006
Last NPPES UpdateMay 6, 2025
NPPES CertifiedMay 6, 2025
✔ NPI 1649280546 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in CA · G30724
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
Also ListedSpecialistTaxonomy 174400000X · License G30724 (CA)
16671 YORBA LINDA BLVD, Yorba Linda, CA 92886
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Other Identifiers 2

OtherWG30724ACA · Medicare Ptan
MedicaidZZZ82813ZCA

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

Dr. Keith L Martin 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 ID5092879353
PECOS Enrollment IDI20090317000666
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 Reassignments

3

Medicare enrollment records show Keith Martin reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

First Choice Physician Partners
Same address
Gynecology
16671 YORBA LINDA BLVD, SUITE 210
Yorba Linda, CA 92886
  • Reassigned Medicare billing, California enrollment
  • 488 clinicians in this Medicare group
NPI 1326478462 (714) 447-4800
Regents Of The University Of California
7.4 mi
Family Medicine
101 THE CITY DR S
Orange, CA 92868
  • Reassigned Medicare billing, California enrollment
  • 75 clinicians in this Medicare group
NPI 1679521850 (714) 456-8068
Uc Regents
7.4 mi
Allergy & Immunology
101 THE CITY DR S
Orange, CA 92868
  • Reassigned Medicare billing, California enrollment
  • 525 clinicians in this Medicare group
NPI 1003864174 (714) 456-8068

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 8

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
146 services99 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
83 services83 patients
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239
This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.
34 services34 patients
Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk G0121
Colorectal cancer screening, such as a colonoscopy, is a preventive measure to detect early signs of cancer in the large intestine. For individuals not at high risk, it's typically recommended at age 50. A small, flexible tube with a camera is used to examine your colon. It's a safe, effective way to catch issues early.
20 services20 patients
Biopsy of large bowel using a flexible endoscope 45380
A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.
19 services19 patients
Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385
This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.
19 services19 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92886 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
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.

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.

Reported Quality Measures

e-Prescribing
At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.
93%644 patients4/55-star benchmark: 99%
Medication Reconciliation
The MIPS eligible clinician performs medication reconciliation for at least one transition of care in which the patient is transitioned into the care of the MIPS eligible clinician.
99%565 patients4/55-star benchmark: 100%
Patient-Specific Education
The MIPS eligible clinician must use clinically relevant information from CEHRT to identify patient-specific educational resources and provide access to those materials to at least one unique patient seen by the MIPS eligible clinician.
80%879 patients4/55-star benchmark: 97%
Provide Patient Access
At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold…
99%879 patients4/55-star benchmark: 100%
Secure Messaging
For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of CEHRT to the patient (or the patient-authorized representative), or in response to a secure…
32%879 patients2/55-star benchmark: 89%
View, Download, or Transmit (VDT)
At least one patient seen by the MIPS eligible clinician during the performance period (or patient-authorized representative) views, downloads or transmits their health information to a third party during the performance period.
37%879 patients
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 4

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

DR. DAVID J CHAPMAN M.D.
Internal Medicine (Gastroenterology)
16671 YORBA LINDA BLVD, STE 200
YORBA LINDA, CA 92886
Orange County (714) 996-3700
DR. NANCY ANDES TOWBIN MD
Obstetrics & Gynecology (Gynecology)
16671 YORBA LINDA BLVD, STE. 210
YORBA LINDA, CA 92886
Orange County (714) 447-4800
FIRST CHOICE PHYSICIAN PARTNERS
Obstetrics & Gynecology (Gynecology)
16671 YORBA LINDA BLVD, SUITE 210
YORBA LINDA, CA 92886
Orange County (714) 447-4800
FIRST CHOICE PHYSICIAN PARTNERS
Internal Medicine (Gastroenterology)
16671 YORBA LINDA BLVD, SUITE 200
YORBA LINDA, CA 92886
Orange County (714) 996-3700

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 Keith Martin's NPI number?

The NPI number for Keith Martin is 1649280546. It was assigned to this individual provider in the NPPES registry on August 9, 2006.

Where is Keith Martin located?

Keith Martin practices at 16671 Yorba Linda Blvd Suite 200, Yorba Linda, CA 92886. The listed phone number is (714) 996-3700.

What is Keith Martin's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Keith Martin enrolled in Medicare?

Yes. Keith Martin 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 organizations bill Medicare for Keith Martin's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Keith Martin reassigns Medicare benefits to 3 organizations: First Choice Physician Partners (Yorba Linda, CA), Regents Of The University Of California (Orange, CA) and Uc Regents (Orange, CA). Each 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 Keith Martin'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 Keith Martin was last updated on May 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.