Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. JAMIN FENG MD
NPI 1942250709
Internal Medicine in Ellensburg, WA

Q: What is Jamin Feng's NPI number?

The NPI number for Jamin Feng is 1942250709. It was assigned to this individual provider in the NPPES registry on May 11, 2006.

Q: What is Jamin Feng's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Jamin Feng was last updated on August 19, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 days 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 May 11, 2006PECOS Enrolled

77.46/100

CMS Quality Rating

603 S CHESTNUT ST, ELLENSBURG, WA 98926(509) 925-6100(509) 925-7604 Get Directions Write a Review

NPPES record last updated: August 19, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

On this page

About Dr. Jamin Feng Md NPPES

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

DR. JAMIN FENG MD (NPI 1942250709) is an individual internal medicine provider in Ellensburg, Washington, licensed in Washington (MD00029578) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with Yakima Valley Memorial, and is a graduate of Other (1988).

NPPES Registry Identity

NPI1942250709

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. JAMIN FENGCredential: MD

Location Address603 S CHESTNUT STEllensburg, WA 98926-3875

Mailing Address700 E Manitoba Ave, Suite 101Ellensburg, WA 98926-3885 · (509) 925-6100 · Fax (509) 925-7604

Phone(509) 925-6100

Fax(509) 925-7604

Sole ProprietorNo

Medical School CMSOtherGraduated 1988

Enumeration DateMay 11, 2006

Last NPPES UpdateAugust 19, 2026

NPPES CertifiedAugust 19, 2026

✔ NPI 1942250709 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in WA · MD00029578

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

603 S CHESTNUT ST, Ellensburg, WA 98926

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Other Identifiers 1

Medicaid1079185WA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include PacificSource Health Plans, Premera Blue Cross Blue Shield of Alaska, Providence Health Plan.Insurance ›

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. Jamin Feng 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 ID8022005586

PECOS Enrollment IDI20040427001003

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 7

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.

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.

208 services206 patients

Test to measure expiratory airflow and volume initiated by patient and evaluated by provider 94016

This test, called spirometry, measures how much and how quickly you can move air out of your lungs. You'll breathe into a mouthpiece connected to a machine. Your provider evaluates the results to assess your lung health.

80 services78 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.

40 services40 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.

38 services38 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.

29 services29 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010

A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.

22 services21 patients

Hospital Affiliations CMS Care Compare 2

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

Yakima Valley Memorial

Acute Care Hospitals · Yakima, WA

1/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number500036

Location2811 Tieton DriveYakima, WA 98902 · Yakima County

Emergency services Birthing friendly

Kittitas Valley Community Hospital

Critical Access Hospitals · Ellensburg, WA

OwnershipGovernment - Hospital District or Authority

CMS Certification Number501333

Location603 South ChestnutEllensburg, WA 98926 · Kittitas County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98926 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

$130.99 typical visit price

range $57.27 – $172.80

Typical copayment $32.74 (range $14.31 – $43.20)

Most-billed visit code 99204

Established Patient

$100.78 typical visit price

range $18.56 – $141.11

Typical copayment $25.19 (range $4.64 – $35.27)

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.

77.46/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

74.16

Promoting Interoperability

100

Improvement Activities

Cost

50.69

Referred Medical Equipment & Supplies CMS DME claims 3

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Intermittent urinary catheter; coude (curved) tip, with or without coating (teflon, silicone, silicone elastomeric, or hydrophilic, etc.), each A4352

DME-Orthotic Devices · category DF008N

1 supplier12 claims1,080 services$6.03 avg. paid by Medicare

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

1 supplier16 claims16 services$117.70 avg. paid by Medicare

Mycophenolic acid, oral, 180 mg J7518

Treatment-Treatment - Miscellaneous · category RX029N

1 supplier12 claims2,880 services$0.97 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

KITTITAS COUNTY PUBLIC HOSPITAL DIST 1

Specialist