Dr. Eric C. Feng, DO

  • Baldwin Park, CA
  • Internist
NPI1518371798PAC ID6204053937
Medicare services, 2024
47
Medicare patients, 2024
30
Part D claims, 2024
548
Publications
2
Hospital affiliations
2
Practice address
1011 Baldwin Park Blvd, Baldwin Park, CA 91706
Practice phone
Call (626) 851-1011
Professional email
Get professional email
Personal email
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Mobile number
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Social profiles

Primary practice

Kaiser Permanente Baldwin Park Medical Center

Hospital · Baldwin Park, California

See all 4 affiliations

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Dr. Eric C. Feng is an internist in Baldwin Park, California

Dr. Feng practices at Kaiser Permanente Baldwin Park Medical Center in Baldwin Park, California, part of Kaiser Permanente.

Dr. Feng's NPI, 1518371798, was assigned on June 16, 2014. Dr. Feng graduated from WesternU College of Osteopathic Medicine of the Pacific in 2014. Dr. Feng holds California license 20A15096.

NPI and contact details
Medicare PAC ID
6204053937
NPI enumeration date
June 16, 2014
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(626) 851-1011
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
38
Medical school graduation
2014

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Eric C. Feng practices at Kaiser Permanente Baldwin Park Medical Center in Baldwin Park, California

Dr. Feng's primary practice is Kaiser Permanente Baldwin Park Medical Center, at 1011 Baldwin Park Blvd, Baldwin Park, CA 91706 in Los Angeles County. The practice phone is (626) 851-1011.

Source: Dmand AI Affiliation Data

Dr. Eric C. Feng is affiliated with 2 sites of care and 2 medical groups

Dr. Feng's primary practice is Kaiser Permanente Baldwin Park Medical Center in Baldwin Park, California, part of Kaiser Permanente. Dr. Feng is also affiliated with Vallejo Medical Center. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Feng to 1 more medical group, named with a free account.

See all 4 affiliations for Dr. Feng

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Eric C. Feng's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Feng practices, 2 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Kaiser Permanente Baldwin Park Medical CenterAvailable with a free account
+1 more site and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Eric C. Feng is one of 16,751 internists in California

Internal medicine is Dr. Feng's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Feng is board certified in internal medicine by the American Board of Internal Medicine. Dr. Feng is licensed in California.

Specialties and state licenses

  • Internal medicine, CaliforniaPrimaryLicense 20A15096 · 2016 to 2026 · taxonomy 207R00000X

Clinical focus

Dmand AI lists acute respiratory failure, anemia, congestive heart failure and stroke among the conditions Dr. Feng treats.

Internists near Dr. Feng

Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Eric C. Feng billed Medicare for 47 services in 2024

CMS data shows 47 Medicare services from Dr. Feng across 2 procedure codes in 2024, for 30 Medicare patients. Medicare paid $4,950 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 202447
Medicare patients30
Paid by Medicare$4,950
Procedure codes2

Dr. Feng's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 332024: 4742%

Dr. Feng compared with the California median for internists, 2024

  • Dr. Feng
  • California median
Medicare services
47vs 36187% below
Medicare patients
30vs 15180% below
Part D claims
248vs 42141% below

Medians across 15,815 internists in California with Dmand AI profiles that report each measure.

Dr. Feng's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Feng

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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Feng and other internists in California.

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Eric C. Feng treated 30 Medicare patients in 2024, average age 70

CMS counts 30 Medicare patients who saw Dr. Feng in 2024. The largest group is 65 to 74, with 13 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 3.85, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Feng's median patient age at 72, with 59% women.

Medicare patients, 202430
Average age70
Average risk score3.85

Dr. Feng's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Chronic conditions among Dr. Feng's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Diabetes57%
  4. Chronic kidney disease50%
  5. Ischemic heart disease50%
  6. Heart failure47%
  7. Arthritis37%

Share of Medicare patients with each condition. A patient can have several.

Dr. Feng's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 72

Patient panel by sex, all payers

  • Women59%
  • Men41%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Eric C. Feng wrote 548 Medicare Part D claims in 2024

In 2024, Dr. Feng wrote 548 Medicare Part D claims for 179 patients. 88% of them were for generic drugs. CMS names the drug for 248 of them, across 13 drugs with 11 or more claims each, at $3,000 in total drug cost. In 2023, CMS named 217 claims across 13 drugs.

Part D claims, 2024548
Drugs named by CMS13
Total drug cost$3,000
Part D patients179

Dr. Feng's Part D claims by kind of drug, 2024

  • Generic484 claims88%
  • Brand-name and other64 claims12%

Dr. Feng's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Dr. Feng's Part D claims, 2024

  • Opioids4%21 of 548 claims
  • Antibiotics12%66 of 548 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 2172024: 24814%

Drugs named by CMS: 13 in 2024, 13 in 2023.

See all prescribing by Dr. Feng

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

How Dr. Eric C. Feng takes part in Medicare

Dr. Feng accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Dr. Eric C. Feng has 2 publications on record

Dmand AI links 2 papers to Dr. Feng, published from 2017 to 2020. Dr. Feng's most frequent co-author is Mark Connors, MD.

Papers2
Years published2017 to 2020

Dr. Feng's most frequent co-authors

Recent publications by Dr. Feng

See all 2 publications and co-authors

See who Dr. Feng researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Feng works with, so you can find a warm path to the right internists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Eric C. Feng received $266 in industry payments from 2016 to 2017

CMS Open Payments shows 3 general payments to Dr. Feng from 2 drug and device companies from 2016 to 2017. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $141.

General payments to Dr. Feng by program year, 2016 to 2017

Companies that paid Dr. Feng the most, 2016 to 2017

Share is of all general payments to this clinician.

See all payments to Dr. Feng

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Eric C. Feng graduated from WesternU College of Osteopathic Medicine of the Pacific

Dr. Feng graduated from WesternU College of Osteopathic Medicine of the Pacific in 2014.

  1. Medical schoolWesternU College of Osteopathic Medicine of the Pacific
  2. Board certified in internal medicineAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Eric C. Feng accepts plans from 2 insurance carriers

Dr. Feng is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.

  • Kaiser Permanente
  • CMS Medicare

Plan types Dr. Feng accepts, by number of carriers

  1. EPO1
  2. HMO1
  3. Medicare1
  4. POS1

Source: Dmand AI Insurance Network Data

Sources for Dr. Eric C. Feng's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Eric C. Feng

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Eric C. Feng's NPI number?

Dr. Eric C. Feng's NPI number is 1518371798. It was assigned on June 16, 2014, and it is active in the NPI Registry.

What kind of doctor is Dr. Eric C. Feng?

Dr. Eric C. Feng is an internist in Baldwin Park, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).

Where does Dr. Eric C. Feng practice?

Dr. Feng practices at 1011 Baldwin Park Blvd, Baldwin Park, CA 91706. Dr. Feng's primary practice is Kaiser Permanente Baldwin Park Medical Center in Baldwin Park, California, part of Kaiser Permanente. Dmand AI also links Dr. Feng to 1 medical group.

What is Dr. Eric C. Feng's office phone number?

The practice phone on file for Dr. Feng is (626) 851-1011.

What is Dr. Eric C. Feng's medical license number?

Dr. Feng holds California license 20A15096.

Which hospitals is Dr. Eric C. Feng affiliated with?

Dr. Feng practices at Kaiser Permanente Baldwin Park Medical Center in Baldwin Park, California. Dr. Feng is also affiliated with Vallejo Medical Center.

What medical group is Dr. Eric C. Feng part of?

Dr. Feng is linked to Southern California Permanente Medical Group. Dmand AI links Dr. Feng to 1 more medical group.

Does Dr. Eric C. Feng accept Medicare?

Yes. CMS data shows Dr. Feng billed Medicare for 47 services in 2024, and Dr. Feng accepts Medicare assignment.

How many Medicare patients does Dr. Eric C. Feng see?

CMS counts 30 Medicare patients who saw Dr. Feng in 2024, with an average age of 70.

Is Dr. Eric C. Feng board certified?

Yes. Dr. Feng is board certified in internal medicine by the American Board of Internal Medicine.

Show 8 more questionsShow fewer questions

What services does Dr. Eric C. Feng bill to Medicare?

In 2024, Dr. Feng's most billed Medicare services were hospital inpatient care (99233) and hospital inpatient care (99223).

Where did Dr. Eric C. Feng go to medical school?

Dr. Feng graduated from WesternU College of Osteopathic Medicine of the Pacific in 2014.

What drugs does Dr. Eric C. Feng prescribe most?

In 2024 Medicare Part D data, Dr. Feng's most prescribed drugs by claims were Furosemide, Atorvastatin Calcium and Hydralazine HCl.

Has Dr. Eric C. Feng received payments from drug or device companies?

CMS Open Payments shows $266 in general payments to Dr. Feng from 2 companies from 2016 to 2017. The largest total came from AstraZeneca Pharmaceuticals LP.

How long has Dr. Eric C. Feng been practicing?

Dr. Feng graduated from medical school in 2014, 12 years ago.

Does Dr. Eric C. Feng do research?

Dmand AI links 2 publications to Dr. Feng, published from 2017 to 2020.

Who does Dr. Eric C. Feng publish with?

Dr. Feng's most frequent co-authors are Mark Connors, MD (1 shared paper).

What insurance does Dr. Eric C. Feng accept?

Dr. Feng is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.

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