Base SequenceChromosomes, Artificial, BacterialEvolution, Molecular
Dr. Marjorie Teresa Wimmer, MD
NPI1003494147PAC ID3577002245
- Medicare services, 2024
- 45
- Medicare patients, 2024
- 43
- Part D claims, 2024
- 456
- Publications
- 1
- Clinical trials
- 10
- Practice address
- 9961 Sierra Ave, Fontana, CA 92335
- Practice phone
- Call (909) 427-3910
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Fontana Medical Center
Fontana, California
Find Dr. Wimmer's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Marjorie Teresa Wimmer is an internist in Fontana, California
Dr. Wimmer practices at Fontana Medical Center in Fontana, California.
Dr. Wimmer's NPI, 1003494147, was assigned on March 30, 2021. Dr. Wimmer graduated from UC Riverside School of Medicine in 2021. Dr. Wimmer's California license number on file is A191760.
NPI and contact details
- NPI
- 1003494147NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3577002245
- NPI enumeration date
- March 30, 2021
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (909) 427-3910
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 31
- Medical school graduation
- 2021
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Marjorie Teresa Wimmer practices at Fontana Medical Center in Fontana, California
Dr. Wimmer's primary practice is Fontana Medical Center, at 9961 Sierra Ave, Fontana, CA 92335 in San Bernardino County. The practice phone is (909) 427-3910.
- Fontana Medical Center9961 Sierra Ave, Fontana, CA 92335 · San Bernardino CountyPhone(909) 427-3910
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Marjorie Teresa Wimmer is affiliated with 3 sites of care and 2 medical groups
Dr. Wimmer's primary practice is Fontana Medical Center in Fontana, California. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Wimmer to 2 more group practices and clinics and 1 medical group, each named with a free account.
Fontana Medical CenterPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Marjorie Teresa Wimmer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Wimmer practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Fontana Medical Center | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Marjorie Teresa Wimmer is one of 16,751 internists in California
Internal medicine is Dr. Wimmer's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Wimmer has a license on file in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. Wimmer
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. Marjorie Teresa Wimmer billed Medicare for 45 services in 2024
CMS data shows 45 Medicare services from Dr. Wimmer across 1 procedure code in 2024, all of them office visits, for 43 Medicare patients. Medicare paid $3,285 for them. Every service was in an office.
Medicare services, 202445
Medicare patients43
Paid by Medicare$3,285
Procedure codes1
Dr. Wimmer compared with the California median for internists, 2024
- Dr. Wimmer
- California median
- Medicare services
- 45vs 36188% below
- Medicare patients
- 43vs 15172% below
- Part D claims
- 140vs 42167% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Wimmer'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.
Need commercial claims for Dr. Wimmer?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Wimmer and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Marjorie Teresa Wimmer treated 43 Medicare patients in 2024, average age 74
CMS counts 43 Medicare patients who saw Dr. Wimmer in 2024. The largest group is 65 to 74, with 22 patients. 75% of them have high blood pressure, and 67% have high cholesterol. Their average risk score is 1.22, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Wimmer's median patient age at 61, with 68% women.
Medicare patients, 202443
Average age74
Average risk score1.22
Dr. Wimmer's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Wimmer's Medicare patients by sex, 2024
- Women2865%
- Men1535%
Chronic conditions among Dr. Wimmer's Medicare patients, 2024
- High blood pressure75%
- High cholesterol67%
- Arthritis37%
- Diabetes33%
- Mood disorders30%
- Depression28%
Share of Medicare patients with each condition. A patient can have several.
Dr. Wimmer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women68%
- Men32%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Marjorie Teresa Wimmer wrote 456 Medicare Part D claims in 2024
In 2024, Dr. Wimmer wrote 456 Medicare Part D claims for 161 patients. 86% of them were for generic drugs. CMS names the drug for 140 of them, across 7 drugs with 11 or more claims each, at $1,514 in total drug cost. In 2023, CMS named 73 claims across 5 drugs.
Part D claims, 2024456
Drugs named by CMS7
Total drug cost$1,514
Part D patients161
Dr. Wimmer's Part D claims by kind of drug, 2024
- Generic392 claims86%
- Brand-name and other64 claims14%
Dr. Wimmer'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. Wimmer's Part D claims, 2024
- Antibiotics5%24 of 456 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: 732024: 14092%
Drugs named by CMS: 7 in 2024, 5 in 2023.
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. Marjorie Teresa Wimmer takes part in Medicare
Dr. Wimmer 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. Marjorie Teresa Wimmer has 1 publication on record
Dmand AI links 1 paper to Dr. Wimmer in 2018.
Papers1
Recent publications by Dr. Wimmer
See who Dr. Wimmer researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Wimmer works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Marjorie Teresa Wimmer has worked on 10 clinical trials
Dmand AI links Dr. Wimmer to 10 clinical trials, 4 of them phase 2 studies. 9 are still active or recruiting. Conditions studied include Adenocarcinoma of Lung, Biliary Atresia and Low Back Pain.
Clinical trials with Dr. Wimmer by phase
- NonePhase 1: no trials
- 4Phase 2: 4 trials
- 1Phase 2/3: 1 trial
- NonePhase 3: no trials
- NonePhase 4: no trials
Trials with no phase (devices, behavioral studies) are left out.
Conditions in Dr. Wimmer's trials
- Adenocarcinoma of Lung
- Biliary Atresia
- Low Back Pain
- Malocclusion
- Muscular Atrophy
Investigators on the most trials with Dr. Wimmer
- Kader Tawfiq Abdelerahman, MD10 shared trials
- Randa Abdelmasih, MD10 shared trials
- Marjorie E. Affel, MD10 shared trials
Recent clinical trials with Dr. Wimmer
Soft Tissue InjuriesWounds and InjuriesA percussion massage gunSpecially designed stainless-steel instruments
Adenocarcinoma of LungAdenocarcinoma
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Marjorie Teresa Wimmer received $40 in industry payments in 2024
CMS Open Payments shows 2 general payments to Dr. Wimmer from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $40.
Companies that paid Dr. Wimmer the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Marjorie Teresa Wimmer graduated from UC Riverside School of Medicine
Dr. Wimmer graduated from UC Riverside School of Medicine in 2021.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Marjorie Teresa Wimmer accepts plans from 13 insurance carriers
Dr. Wimmer is in network with 13 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- HCSC
- Regence Health Plans
- Alliant Health Plans
- Aspirus Health Plan
- +5 more carriersWith a free account
Plan types Dr. Wimmer accepts, by number of carriers
- Medicare7
- PPO7
- HMO6
- EPO4
- POS4
Source: Dmand AI Insurance Network Data
Sources for Dr. Marjorie Teresa Wimmer's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare 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 percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Marjorie Teresa Wimmer
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. Marjorie Teresa Wimmer's NPI number?
Dr. Marjorie Teresa Wimmer's NPI number is 1003494147. It was assigned on March 30, 2021, and it is active in the NPI Registry.
What kind of doctor is Dr. Marjorie Teresa Wimmer?
Dr. Marjorie Teresa Wimmer is an internist in Fontana, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Marjorie Teresa Wimmer practice?
Dr. Wimmer practices at 9961 Sierra Ave, Fontana, CA 92335. Dr. Wimmer's primary practice is Fontana Medical Center in Fontana, California. Dmand AI also links Dr. Wimmer to 2 group practices and clinics and 1 medical group.
What is Dr. Marjorie Teresa Wimmer's office phone number?
The practice phone on file for Dr. Wimmer is (909) 427-3910.
What is Dr. Marjorie Teresa Wimmer's medical license number?
Dr. Wimmer's California license number on file is A191760.
What medical group is Dr. Marjorie Teresa Wimmer part of?
Dr. Wimmer is linked to Southern California Permanente Medical Group. Dmand AI links Dr. Wimmer to 1 more medical group.
Does Dr. Marjorie Teresa Wimmer accept Medicare?
Yes. CMS data shows Dr. Wimmer billed Medicare for 45 services in 2024, and Dr. Wimmer accepts Medicare assignment.
How many Medicare patients does Dr. Marjorie Teresa Wimmer see?
CMS counts 43 Medicare patients who saw Dr. Wimmer in 2024, with an average age of 74.
What services does Dr. Marjorie Teresa Wimmer bill to Medicare?
In 2024, Dr. Wimmer's most billed Medicare services were office visit, established patient (99213).
Where did Dr. Marjorie Teresa Wimmer go to medical school?
Dr. Wimmer graduated from UC Riverside School of Medicine in 2021.
Show 5 more questionsShow fewer questions
What drugs does Dr. Marjorie Teresa Wimmer prescribe most?
In 2024 Medicare Part D data, Dr. Wimmer's most prescribed drugs by claims were Atorvastatin Calcium, Lisinopril and Gabapentin.
Has Dr. Marjorie Teresa Wimmer received payments from drug or device companies?
CMS Open Payments shows $40 in general payments to Dr. Wimmer from 1 company from 2024 to 2024. The largest total came from Novo Nordisk Inc.
How long has Dr. Marjorie Teresa Wimmer been practicing?
Dr. Wimmer graduated from medical school in 2021, 5 years ago.
Does Dr. Marjorie Teresa Wimmer do research?
Dmand AI links 1 publication to Dr. Wimmer. Dr. Wimmer has worked on 10 clinical trials.
What insurance does Dr. Marjorie Teresa Wimmer accept?
Dr. Wimmer is in network with 13 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
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