JACK C FENG M.D.
NPI 1710964481
Internal Medicine - Gastroenterology in Mission Viejo, CA

Q: What is Jack Feng's NPI number?

The NPI number for Jack Feng is 1710964481. It was assigned to this individual provider in the NPPES registry on December 23, 2005.

Q: What is Jack Feng's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Jack Feng was last updated on October 28, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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 December 23, 2005PECOS EnrolledAccepts Medicare Assignment

27871 MEDICAL CENTER RD, SUITE 200, MISSION VIEJO, CA 92691(949) 364-5090(949) 542-8710 Get Directions Write a Review

NPPES record last updated: October 28, 2020. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Oct 28, 2020, Nov 19, 2018 (2 updates tracked since 2018).

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About Jack C Feng M.d. NPPES

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

JACK C FENG M.D. (NPI 1710964481) is an individual gastroenterology provider in Mission Viejo, California, licensed in California (A64319) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS and is a graduate of Ohio State University College Of Medicine (1996).

NPPES Registry Identity

NPI1710964481

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameJACK C FENGCredential: M.D.

Location Address27871 MEDICAL CENTER RD, SUITE 200Mission Viejo, CA 92691-6404

Mailing Address27871 Medical Center Rd Ste 240Mission Viejo, CA 92691-6406 · (949) 364-5090

Phone(949) 364-5090

Fax(949) 542-8710

Sole ProprietorNo

Medical School CMSOhio State University College Of MedicineGraduated 1996

Enumeration DateDecember 23, 2005

Last NPPES UpdateOctober 28, 20202 updates tracked since enumeration

NPPES CertifiedOctober 28, 2020

✔ NPI 1710964481 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in CA · A64319

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.

27871 MEDICAL CENTER RD, Mission Viejo, CA 92691

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Other Identifiers 1

Medicaid00A643190CA

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

Jack C Feng 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 ID7517063167

PECOS Enrollment IDI20100317000149

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 13

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.

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.

237 services237 patients

Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito G0500

Moderate sedation is a method where a physician uses medication to help you relax during a gastrointestinal endoscopy. An independent trained observer will be present to monitor your vital signs and ensure your safety throughout the procedure. It's a common and safe practice.

207 services204 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.

183 services183 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.

133 services129 patients

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.

112 services92 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.

58 services58 patients

Removal of large bowel tissue using a flexible endoscope 45390

This procedure, known as a colonoscopy, involves using a flexible endoscope to examine and potentially remove tissue from the large intestine. The endoscope allows the doctor to view the bowel lining directly and remove any abnormal tissue for further analysis.

48 services48 patients

Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm 43249

This procedure involves using a flexible tube with a camera, called an endoscope, to gently expand narrowed areas in your esophagus, stomach, or upper small bowel. A small balloon is inflated, making it easier for food and liquid to pass through. It's safe and effective.

43 services40 patients

Destruction of polyp or growth of large bowel using a flexible endoscope 45388

This procedure involves the removal of a polyp or growth in the large bowel. A flexible endoscope, a thin tube with a camera, is inserted through the rectum to visualize and remove the growth. This helps maintain bowel health and prevent complications.

38 services38 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

29 services29 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

25 services24 patients

Colorectal cancer screening; colonoscopy on individual at high risk G0105

Colorectal cancer screening, specifically a colonoscopy, is a preventive measure for those at high risk. A thin, flexible tube with a camera inspects the colon to spot any abnormal growths. This test helps detect potential issues early, enhancing the effectiveness of treatment.

25 services25 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

11 services11 patients

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

$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.

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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. LUIS ALBERTO CHANES M.D.

Ophthalmology

27871 MEDICAL CENTER RD, SUITE 120
MISSION VIEJO, CA 92691

Orange County (949) 364-6688

FACULTY PHYSICIANS AND SURGEONS OF LLUSM

Pediatrics

27871 MEDICAL CENTER RD, STE 140
MISSION VIEJO, CA 92691

Orange County (909) 522-2799

MS. ALICE MARIE DAUGHERTY NURSE PRACTITIONER

Nurse Practitioner (Family)

27871 MEDICAL CENTER RD, SUITE 240
MISSION VIEJO, CA 92691

Orange County (949) 364-5090

NAHID BIRJANDI PODIATRIC INC

Clinic/Center (Podiatric)

27871 MEDICAL CENTER RD, SUITE 130
MISSION VIEJO, CA 92691

Orange County (949) 365-1700

ALEXANDER ARTHUR PRATTES

General Practice

27871 MEDICAL CENTER RD, #160
MISSION VIEJO, CA 92691

Orange County (949) 364-6004

MISSION INTERNAL MEDICAL GROUP, INC.

Anesthesiology

27871 MEDICAL CENTER RD, SUITE 200
MISSION VIEJO, CA 92691

Orange County (949) 347-8314

DR. RAMA GHAEM MAGHAMI DDS

Dentist (General Practice)

27871 MEDICAL CENTER RD, SUITE 165
MISSION VIEJO, CA 92691

Orange County (949) 364-2529

DR. ROBERT CHARLES HIRST DDS,MS

Dentist (Periodontics)

27871 MEDICAL CENTER RD, #260
MISSION VIEJO, CA 92691

Orange County (949) 364-2850

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 Jack Feng's NPI number?

The NPI number for Jack Feng is 1710964481. It was assigned to this individual provider in the NPPES registry on December 23, 2005.

Where is Jack Feng located?

Jack Feng practices at 27871 Medical Center Rd Suite 200, Mission Viejo, CA 92691. The listed phone number is (949) 364-5090.

What is Jack Feng's specialty?

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

Is Jack Feng enrolled in Medicare?

Yes. Jack Feng 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 Jack Feng was last updated on October 28, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.