Dr. Lew D. Barker, MD

  • Turlock, CA
  • Family medicine physician
NPI1295770337PAC ID8628132099
Medicare services, 2024
1,130
Medicare patients, 2024
386
Part D claims, 2024
10,302
Publications
2
Hospital affiliations
1
Practice address
3100 W Christoffersen Pkwy, Turlock, CA 95382
Practice phone
Call (209) 524-1211
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Sutter Valley Medical Foundation

Turlock, California

See all 7 affiliations

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Dr. Lew D. Barker is a family medicine physician in Turlock, California

Dr. Barker practices at Sutter Valley Medical Foundation in Turlock, California.

Dr. Barker's NPI, 1295770337, was assigned on June 20, 2006. Dr. Barker graduated from Loma Linda University School Of Medicine in 1981. Dr. Barker's California license number on file is G52075.

NPI and contact details
Medicare PAC ID
8628132099
NPI enumeration date
June 20, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(209) 524-1211
Professional email
Get email
Personal email
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Mobile number
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Sex
Male
Estimated age
74
Medical school graduation
1981

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

Dr. Lew D. Barker practices at Sutter Valley Medical Foundation in Turlock, California

Dr. Barker's primary practice is Sutter Valley Medical Foundation, at 3100 W Christoffersen Pkwy, Turlock, CA 95382 in Stanislaus County. The practice phone is (209) 524-1211.

  • Sutter Valley Medical Foundation
    3100 W Christoffersen Pkwy, Turlock, CA 95382 · Stanislaus CountyPhone(209) 524-1211

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dr. Lew D. Barker is affiliated with 6 sites of care and 1 medical group

Dr. Barker's primary practice is Sutter Valley Medical Foundation in Turlock, California. Dr. Barker is also affiliated with Memorial Medical Center. The medical group on file is SGMF Radiology. Dmand AI also links Dr. Barker to 3 more home health agencies and 1 group practice or clinic, each named with a free account.

See all 7 affiliations for Dr. Barker

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Dr. Lew D. Barker's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Barker practices, 5 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Sutter Valley Medical FoundationAvailable with a free account
+5 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Lew D. Barker is one of 15,680 family medicine physicians in California

Family medicine is Dr. Barker's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dmand AI has Dr. Barker's licenses on file in 2 states: California and Florida.

Specialties and state licenses

  • Family medicine, CaliforniaPrimaryLicense G52075 · 1984 to 2025 · taxonomy 207Q00000X
  • Florida license1982 to 1985

Clinical focus

Dmand AI lists acid reflux, acute mini-stroke (TIA), acute skin infection, anxiety, asthma, atrial fibrillation and flutter, bursitis and cardiomyopathy among the conditions Dr. Barker treats.

Family medicine physicians near Dr. Barker

Counts of family medicine physicians 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. Lew D. Barker billed Medicare for 1,130 services in 2024

CMS data shows 1,130 Medicare services from Dr. Barker across 8 procedure codes in 2024, for 386 Medicare patients. Medicare paid $81,525 for them. Every service was in an office.

Medicare services, 20241,130
Medicare patients386
Paid by Medicare$81,525
Procedure codes8

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

  • 2023
  • 2024
Office and hospital visits
2023: 9212024: 8735%
Other services
2023: 1792024: 10939%
Tests and treatments
2023: 712024: 8114%
Drugs given in the office
2023: 532024: 6726%

Dr. Barker compared with the California median for family medicine physicians, 2024

  • Dr. Barker
  • California median
Medicare services
1,130vs 2464.6 times
Medicare patients
386vs 1183.3 times
Part D claims
9,584vs 83311.5 times

Medians across 15,349 family medicine physicians in California with Dmand AI profiles that report each measure.

Dr. Barker'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. Barker

Need commercial claims for Dr. Barker?

Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Barker and other family medicine physicians in California.

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

Dr. Lew D. Barker treated 386 Medicare patients in 2024, average age 74

CMS counts 386 Medicare patients who saw Dr. Barker in 2024. The largest group is 65 to 74, with 172 patients. 72% of them have high blood pressure, and 67% have high cholesterol. 16% are also on Medicaid. Their average risk score is 1.15, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Barker's median patient age at 67, with 60% women.

Medicare patients, 2024386
Average age74
Average risk score1.15
Also on Medicaid16%

Dr. Barker's Medicare patients by age, 2024

Dr. Barker's Medicare patients by sex, 2024

  • Women20854%
  • Men17846%

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

  1. High blood pressure72%
  2. High cholesterol67%
  3. Arthritis46%
  4. Diabetes34%
  5. Ischemic heart disease26%
  6. Chronic kidney disease25%
  7. Anxiety24%
  8. Mood disorders21%

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

Dr. Barker's patients across all payers

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

Patient panel by age, all payers

Median age 67

Patient panel by sex, all payers

  • Women60%
  • Men39%

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

Dr. Lew D. Barker wrote 10,302 Medicare Part D claims in 2024

In 2024, Dr. Barker wrote 10,302 Medicare Part D claims for 669 patients. 92% of them were for generic drugs. CMS names the drug for 9,584 of them, across 138 drugs with 11 or more claims each, at $375,296 in total drug cost. In 2023, CMS named 10,052 claims across 138 drugs.

Part D claims, 202410,302
Drugs named by CMS138
Total drug cost$375,296
Part D patients669

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

  • Generic9,514 claims92%
  • Brand-name750 claims7%
  • Other38 claims0%

Dr. Barker'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. Barker's Part D claims, 2024

  • Opioids6%635 of 10,302 claims
  • Antibiotics2%206 of 10,302 claims
  • Antipsychotics, patients 65 and over1%75 of 10,302 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: 10,0522024: 9,5845%

Drugs named by CMS: 138 in 2024, 138 in 2023.

See all prescribing by Dr. Barker

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

Dr. Lew D. Barker offers telehealth to Medicare patients

Dr. Barker accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Barker as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)

Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)

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Dr. Lew D. Barker has 2 publications on record

Dmand AI links 2 papers to Dr. Barker in 2013. Dr. Barker's most frequent co-authors are Michael Joseph Brennan, MD, Richard F. Silver, MD and Robert Steven Wallis, MD.

Papers2

Dr. Barker's most frequent co-authors

Recent publications by Dr. Barker

See all 2 publications and co-authors

See who Dr. Barker researches with

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

How network discovery works

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

Dr. Lew D. Barker received $1,323 in industry payments from 2016 to 2024

CMS Open Payments shows 118 general payments to Dr. Barker from 18 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 99% of the total. GlaxoSmithKline, LLC. paid the most, $282.

General payments to Dr. Barker by program year, 2016 to 2024

General payments to Dr. Barker by kind, 2016 to 2024

$1.3Kin total
  • Food and beverage$1,30699%
  • Education$171%

Companies that paid Dr. Barker the most, 2016 to 2024

Share is of all general payments to this clinician.

See all payments to Dr. Barker

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

Dr. Lew D. Barker has 1 award and honors on record

Dmand AI lists 1 award for Dr. Barker, most recently CMS Stage 1 EHR in 2013.

Awards and honors for Dr. Barker

  1. 2013
    • CMS Stage 1 EHR

Source: Dmand AI Professional Profile Data

Dr. Lew D. Barker graduated from Loma Linda University School Of Medicine

Dr. Barker graduated from Loma Linda University School Of Medicine in 1981.

  1. Medical schoolLoma Linda University School Of Medicine

Source: Dmand AI Professional Profile Data

Dr. Lew D. Barker accepts plans from 13 insurance carriers

Dr. Barker is in network with 13 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.

  • Aetna
  • Elevance
  • Blue Cross Blue Shield of Michigan
  • United Healthcare
  • HCSC
  • Alliant Health Plans
  • Blue Cross Blue Shield of Massachusetts
  • Regence Health Plans
  • +5 more carriersWith a free account

Plan types Dr. Barker accepts, by number of carriers

  1. PPO10
  2. Medicare8
  3. HMO6
  4. POS5
  5. EPO3

Source: Dmand AI Insurance Network Data

Sources for Dr. Lew D. Barker'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 phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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)Doctors and Clinicians Utilization Data (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)
Awards and committee rolesDmand AI Professional Profile Data
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. Lew D. Barker

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. Lew D. Barker's NPI number?

Dr. Lew D. Barker's NPI number is 1295770337. It was assigned on June 20, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Lew D. Barker?

Dr. Lew D. Barker is a family medicine physician in Turlock, California. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).

Where does Dr. Lew D. Barker practice?

Dr. Barker practices at 3100 W Christoffersen Pkwy, Turlock, CA 95382. Dr. Barker's primary practice is Sutter Valley Medical Foundation in Turlock, California. Dmand AI also links Dr. Barker to 3 home health agencies and 1 group practice or clinic.

What is Dr. Lew D. Barker's office phone number?

The practice phone on file for Dr. Barker is (209) 524-1211.

What is Dr. Lew D. Barker's medical license number?

Dr. Barker's California license number on file is G52075, one of the licenses on file in 2 states.

Which states has Dr. Lew D. Barker been licensed in?

Dmand AI has state licenses on file for Dr. Barker in California (1984 to 2025) and Florida (1982 to 1985).

Which hospitals is Dr. Lew D. Barker affiliated with?

Dr. Barker is affiliated with Memorial Medical Center.

What medical group is Dr. Lew D. Barker part of?

Dr. Barker is linked to SGMF Radiology.

Does Dr. Lew D. Barker accept Medicare?

Yes. CMS data shows Dr. Barker billed Medicare for 1,130 services in 2024, and Dr. Barker accepts Medicare assignment.

Does Dr. Lew D. Barker offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Barker as offering telehealth services.

Show 9 more questionsShow fewer questions

How many Medicare patients does Dr. Lew D. Barker see?

CMS counts 386 Medicare patients who saw Dr. Barker in 2024, with an average age of 74.

What services does Dr. Lew D. Barker bill to Medicare?

In 2024, Dr. Barker's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and medicare service (G0439).

Where did Dr. Lew D. Barker go to medical school?

Dr. Barker graduated from Loma Linda University School Of Medicine in 1981.

What drugs does Dr. Lew D. Barker prescribe most?

In 2024 Medicare Part D data, Dr. Barker's most prescribed drugs by claims were Atorvastatin Calcium, Hydrocodone-Acetaminophen and Omeprazole.

Has Dr. Lew D. Barker received payments from drug or device companies?

CMS Open Payments shows $1,323 in general payments to Dr. Barker from 18 companies from 2016 to 2024. The largest total came from GlaxoSmithKline, LLC.

How long has Dr. Lew D. Barker been practicing?

Dr. Barker graduated from medical school in 1981, 45 years ago.

Does Dr. Lew D. Barker do research?

Dmand AI links 2 publications to Dr. Barker.

Who does Dr. Lew D. Barker publish with?

Dr. Barker's most frequent co-authors are Michael Joseph Brennan, MD (1 shared paper), Richard F. Silver, MD (1 shared paper) and Robert Steven Wallis, MD (1 shared paper).

What insurance does Dr. Lew D. Barker accept?

Dr. Barker is in network with 13 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.

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