Dr. Gretchen Eileen Winter, DO, PhD

  • Templeton, CA
  • Internist
NPI1558640953PAC ID5395984017
Medicare services, 2024
1,143
Medicare patients, 2024
503
Part D claims, 2024
209
MIPS score, 2024
82
Hospital affiliations
3
Practice address
1100 Las Tablas Rd, Templeton, CA 93465
Practice phone
Call (805) 434-3500
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Adventist Health Twin Cities

Hospital · Templeton, California

See all 6 affiliations

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Dr. Gretchen Eileen Winter is an internist in Templeton, California

Dr. Winter practices at Adventist Health Twin Cities in Templeton, California, part of Adventist Health.

Dr. Winter's NPI, 1558640953, was assigned on August 16, 2011. Dr. Winter graduated from WesternU College of Osteopathic Medicine of the Pacific in 2010. Dr. Winter holds California license 20A12705.

NPI and contact details
Medicare PAC ID
5395984017
NPI enumeration date
August 16, 2011
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(805) 434-3500
Professional email
Get email
Personal email
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Mobile number
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Sex
Female
Estimated age
42
Medical school graduation
2010

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

Dr. Gretchen Eileen Winter practices at Adventist Health Twin Cities in Templeton, California

Dr. Winter's primary practice is Adventist Health Twin Cities, at 1100 Las Tablas Rd, Templeton, CA 93465 in San Luis Obispo County. The practice phone is (805) 434-3500.

Source: Dmand AI Affiliation Data

Dr. Gretchen Eileen Winter is affiliated with 3 sites of care and 3 medical groups

Dr. Winter's primary practice is Adventist Health Twin Cities in Templeton, California, part of Adventist Health. Dr. Winter is also affiliated with Dignity Health - French Hospital Medical Center. The medical group on file is Vituity. Dmand AI also links Dr. Winter to 1 more hospital and 2 medical groups, each named with a free account.

See all 6 affiliations for Dr. Winter

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

Dmand AI tracks the EHR system at Dr. Gretchen Eileen Winter's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Winter practices, 3 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Adventist Health Twin CitiesAvailable with a free account
+2 more sites and 2 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Gretchen Eileen Winter is one of 16,751 internists in California

Internal medicine is Dr. Winter's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Winter is board certified in internal medicine by the American Osteopathic Board of Internal Medicine. Dmand AI has Dr. Winter's licenses on file in 3 states: California, West Virginia and Ohio.

Specialties and state licenses

  • Internal medicine, CaliforniaPrimaryLicense 20A12705 · 2013 to 2026 · taxonomy 207R00000X
  • West Virginia license2012 to 2014
  • Ohio license2010 to 2011

Clinical focus

Dmand AI lists acute respiratory failure, bile duct problems, cardiac arrhythmia, cellulitis, circulatory problems in extremities, congestive heart failure, electrolyte disorders and gastrointestinal bleeding among the conditions Dr. Winter treats.

Internists near Dr. Winter

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. Gretchen Eileen Winter billed Medicare for 1,143 services in 2024

CMS data shows 1,143 Medicare services from Dr. Winter across 5 procedure codes in 2024, for 503 Medicare patients. Medicare paid $92,091 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 20241,143
Medicare patients503
Paid by Medicare$92,091
Procedure codes5

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

  • 2023
  • 2024
Office and hospital visits
2023: 1,3562024: 1,14316%

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

  • Dr. Winter
  • California median
Medicare services
1,143vs 3613.2 times
Medicare patients
503vs 1513.3 times
Part D claims
49vs 42188% below

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

Dr. Winter'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. Winter

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

Dr. Gretchen Eileen Winter treated 503 Medicare patients in 2024, average age 78

CMS counts 503 Medicare patients who saw Dr. Winter in 2024. The largest group is 75 to 84, with 192 patients. 75% of them have high blood pressure, and 72% have high cholesterol. 34% are also on Medicaid. Their average risk score is 1.96, 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. Winter's median patient age at 74, with 50% women.

Medicare patients, 2024503
Average age78
Average risk score1.96
Also on Medicaid34%

Dr. Winter's Medicare patients by age, 2024

Dr. Winter's Medicare patients by sex, 2024

  • Women25651%
  • Men24749%

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

  1. High blood pressure75%
  2. High cholesterol72%
  3. Arthritis53%
  4. Mood disorders42%
  5. Atrial fibrillation39%
  6. Depression39%
  7. Anxiety38%
  8. Chronic kidney disease38%

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

Dr. Winter's patients across all payers

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

Patient panel by age, all payers

Median age 74

Patient panel by sex, all payers

  • Women50%
  • Men50%

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

Dr. Gretchen Eileen Winter wrote 209 Medicare Part D claims in 2024

In 2024, Dr. Winter wrote 209 Medicare Part D claims for 112 patients. 87% of them were for generic drugs. CMS names the drug for 49 of them, across 4 drugs with 11 or more claims each, at $6,166 in total drug cost. In 2023, CMS named 66 claims across 4 drugs.

Part D claims, 2024209
Drugs named by CMS4
Total drug cost$6,166
Part D patients112

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

  • Generic182 claims87%
  • Brand-name27 claims13%

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

  • Opioids6%12 of 209 claims
  • Antibiotics20%41 of 209 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: 662024: 4926%

Drugs named by CMS: 4 in 2024, 4 in 2023.

See all prescribing by Dr. Winter

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. Gretchen Eileen Winter scored 82 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 82 out of 100 for Dr. Winter for performance year 2024, reported as part of a group. Dr. Winter accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Dr. Winter's MIPS scores, performance year 2024

  • 82of 100Final score
  • 65.6of 100Quality
  • 40of 100Improvement Activities
  • 71of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

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Dr. Gretchen Eileen Winter received $852 in industry payments in 2016

CMS Open Payments shows 44 general payments to Dr. Winter from 14 drug and device companies in 2016. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $255.

Companies that paid Dr. Winter the most, 2016 to 2016

Share is of all general payments to this clinician.

See all payments to Dr. Winter

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

Dr. Gretchen Eileen Winter graduated from WesternU College of Osteopathic Medicine of the Pacific

Dr. Winter graduated from WesternU College of Osteopathic Medicine of the Pacific in 2010. Dr. Winter is a member of AOA and SHM.

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

Source: Dmand AI Professional Profile Data

Dr. Gretchen Eileen Winter accepts plans from 8 insurance carriers

Dr. Winter is in network with 8 carriers, including Elevance, Highmark and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.

  • Elevance
  • Highmark
  • Blue Cross Blue Shield of Michigan
  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • Regence Health Plans
  • CMS Medicare
  • KY State Medicaid

Plan types Dr. Winter accepts, by number of carriers

  1. Medicare6
  2. PPO6
  3. POS3
  4. EPO2
  5. HMO2
  6. Medicaid1

Source: Dmand AI Insurance Network Data

Sources for Dr. Gretchen Eileen Winter'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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
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. Gretchen Eileen Winter

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. Gretchen Eileen Winter's NPI number?

Dr. Gretchen Eileen Winter's NPI number is 1558640953. It was assigned on August 16, 2011, and it is active in the NPI Registry.

What kind of doctor is Dr. Gretchen Eileen Winter?

Dr. Gretchen Eileen Winter is an internist in Templeton, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).

Where does Dr. Gretchen Eileen Winter practice?

Dr. Winter practices at 1100 Las Tablas Rd, Templeton, CA 93465. Dr. Winter's primary practice is Adventist Health Twin Cities in Templeton, California, part of Adventist Health. Dmand AI also links Dr. Winter to 1 hospital and 2 medical groups.

What is Dr. Gretchen Eileen Winter's office phone number?

The practice phone on file for Dr. Winter is (805) 434-3500.

What is Dr. Gretchen Eileen Winter's medical license number?

Dr. Winter holds California license 20A12705, one of the licenses on file in 3 states.

Which states has Dr. Gretchen Eileen Winter been licensed in?

Dmand AI has state licenses on file for Dr. Winter in California (2013 to 2026), West Virginia (2012 to 2014) and Ohio (2010 to 2011).

Which hospitals is Dr. Gretchen Eileen Winter affiliated with?

Dr. Winter practices at Adventist Health Twin Cities in Templeton, California. Dr. Winter is also affiliated with Dignity Health - French Hospital Medical Center. Dmand AI links Dr. Winter to 1 more hospital.

What medical group is Dr. Gretchen Eileen Winter part of?

Dr. Winter is linked to Vituity. Dmand AI links Dr. Winter to 2 more medical groups.

Does Dr. Gretchen Eileen Winter accept Medicare?

Yes. CMS data shows Dr. Winter billed Medicare for 1,143 services in 2024, and Dr. Winter accepts Medicare assignment.

What is Dr. Gretchen Eileen Winter's MIPS score?

Dr. Winter's MIPS final score for performance year 2024 is 82 out of 100, reported as part of a group.

Show 8 more questionsShow fewer questions

How many Medicare patients does Dr. Gretchen Eileen Winter see?

CMS counts 503 Medicare patients who saw Dr. Winter in 2024, with an average age of 78.

Is Dr. Gretchen Eileen Winter board certified?

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

What services does Dr. Gretchen Eileen Winter bill to Medicare?

In 2024, Dr. Winter's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99233) and hospital inpatient care (99239).

Where did Dr. Gretchen Eileen Winter go to medical school?

Dr. Winter graduated from WesternU College of Osteopathic Medicine of the Pacific in 2010.

What drugs does Dr. Gretchen Eileen Winter prescribe most?

In 2024 Medicare Part D data, Dr. Winter's most prescribed drugs by claims were Furosemide, Prednisone and Amoxicillin-Clavulanate Potass.

Has Dr. Gretchen Eileen Winter received payments from drug or device companies?

CMS Open Payments shows $852 in general payments to Dr. Winter from 14 companies from 2016 to 2016. The largest total came from AstraZeneca Pharmaceuticals LP.

How long has Dr. Gretchen Eileen Winter been practicing?

Dr. Winter graduated from medical school in 2010, 16 years ago.

What insurance does Dr. Gretchen Eileen Winter accept?

Dr. Winter is in network with 8 carriers, including Elevance, Highmark and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.

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