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Dr. Dexter M. Frederick, MD
NPI1366490690PAC ID0749201531
- Part D claims, 2024
- 72
- Publications
- 1
- MIPS score, 2024
- 89
- Industry payments
- $29
- Affiliated sites
- 1
- Practice address
- 11441 Heacock St, Moreno Valley, CA 92557
- Practice phone
- Call (909) 558-3111
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Loma Linda University Moreno Valley Medicine & Pediatrics Clinic
Moreno Valley, California
Find Dr. Frederick'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. Dexter M. Frederick is an internist in Moreno Valley, California
Dr. Frederick practices at Loma Linda University Moreno Valley Medicine & Pediatrics Clinic in Moreno Valley, California.
Dr. Frederick's NPI, 1366490690, was assigned on May 5, 2006. Dr. Frederick graduated from Loma Linda University School Of Medicine in 1997. Dr. Frederick holds Florida license 85120.
NPI and contact details
- NPI
- 1366490690NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0749201531
- NPI enumeration date
- May 5, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (909) 558-3111
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Dexter M. Frederick practices at Loma Linda University Moreno Valley Medicine & Pediatrics Clinic in Moreno Valley, California
Dr. Frederick's primary practice is Loma Linda University Moreno Valley Medicine & Pediatrics Clinic, at 11441 Heacock St, Moreno Valley, CA 92557 in Riverside County. The practice phone is (909) 558-3111.
- Loma Linda University Moreno Valley Medicine & Pediatrics Clinic11441 Heacock St, Moreno Valley, CA 92557 · Riverside CountyPhone(909) 558-3111
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Dexter M. Frederick is affiliated with 2 sites of care and 4 medical groups
Dr. Frederick's primary practice is Loma Linda University Moreno Valley Medicine & Pediatrics Clinic in Moreno Valley, California. The medical group on file is Loma Linda University Faculty Medical Group (LLUFMG). Dmand AI also links Dr. Frederick to 3 more medical groups and 1 group practice or clinic, each named with a free account.
Loma Linda University Moreno Valley Medicine & Pediatrics ClinicPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Dexter M. Frederick's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Frederick practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Loma Linda University Moreno Valley Medicine & Pediatrics Clinic | Available with a free account |
| +1 more site and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Dexter M. Frederick is one of 16,751 internists in California
Internal medicine is Dr. Frederick's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Frederick is board certified in pediatrics by the American Board of Pediatrics. Dmand AI has Dr. Frederick's licenses on file in 2 states: Florida and California.
Specialties and state licenses
- Internal medicine, FloridaPrimary
- California license
Internists near Dr. Frederick
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. Dexter M. Frederick's patients have a median age of 67
Across all payers, Dmand AI patient panel data puts Dr. Frederick's median patient age at 67, with 50% women.
Dr. Frederick'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
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Dr. Dexter M. Frederick wrote 72 Medicare Part D claims in 2024
In 2024, Dr. Frederick wrote 72 Medicare Part D claims for 22 patients. 83% of them were for generic drugs. They cover 7 drugs, with $1,264 in total drug cost. In 2022, CMS named 836 claims across 30 drugs.
Part D claims, 202472
Drugs named by CMS7
Total drug cost$1,264
Part D patients22
Dr. Frederick's Part D claims by kind of drug, 2024
- Generic60 claims83%
- Brand-name and other12 claims17%
Dr. Frederick's most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 8362023: 11986%
Drugs named by CMS: 7 in 2023, 30 in 2022.
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. Dexter M. Frederick scored 89 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Frederick for performance year 2024, reported as part of a group. Dr. Frederick accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Frederick's MIPS scores, performance year 2024
- 89of 100Final score
- 72.1of 100Quality
- 80of 100Promoting Interoperability
- 40of 100Improvement Activities
- 77of 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. Dexter M. Frederick has 1 publication on record
Dmand AI links 1 paper to Dr. Frederick. Dr. Frederick's most frequent co-author is Yvonne Gollin, MD.
Papers1
Dr. Frederick's most frequent co-authors
Recent publications by Dr. Frederick
See who Dr. Frederick researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Frederick 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. Dexter M. Frederick received $29 in industry payments in 2019
CMS Open Payments shows 1 general payment to Dr. Frederick from 1 drug or device company in 2019. Food and beverage make up the largest share, 100% of the total. Zimmer Biomet Holdings, Inc. paid the most, $29.
Companies that paid Dr. Frederick the most, 2019 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Dexter M. Frederick graduated from Loma Linda University School Of Medicine
Dr. Frederick graduated from Loma Linda University School Of Medicine in 1997.
- Medical school
- Board certified in pediatrics
Source: Dmand AI Professional Profile Data
Dr. Dexter M. Frederick accepts plans from 18 insurance carriers
Dr. Frederick is in network with 18 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 12. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Cigna
- HCSC
- Humana
- Blue Cross Blue Shield of Massachusetts
- +10 more carriersWith a free account
Plan types Dr. Frederick accepts, by number of carriers
- PPO12
- Medicare11
- HMO10
- EPO4
- POS4
Source: Dmand AI Insurance Network Data
Sources for Dr. Dexter M. Frederick'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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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)Clinician Public Reporting: Overall MIPS Performance (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 |
| 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. Dexter M. Frederick
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. Dexter M. Frederick's NPI number?
Dr. Dexter M. Frederick's NPI number is 1366490690. It was assigned on May 5, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Dexter M. Frederick?
Dr. Dexter M. Frederick is an internist in Moreno Valley, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Dexter M. Frederick practice?
Dr. Frederick practices at 11441 Heacock St, Moreno Valley, CA 92557. Dr. Frederick's primary practice is Loma Linda University Moreno Valley Medicine & Pediatrics Clinic in Moreno Valley, California. Dmand AI also links Dr. Frederick to 3 medical groups and 1 group practice or clinic.
What is Dr. Dexter M. Frederick's office phone number?
The practice phone on file for Dr. Frederick is (909) 558-3111.
What is Dr. Dexter M. Frederick's medical license number?
Dr. Frederick holds Florida license 85120, one of the licenses on file in 2 states.
Which states has Dr. Dexter M. Frederick been licensed in?
Dmand AI has state licenses on file for Dr. Frederick in Florida (2002 to 2026) and California (2023 to 2025).
What medical group is Dr. Dexter M. Frederick part of?
Dr. Frederick is linked to Loma Linda University Faculty Medical Group (LLUFMG). Dmand AI links Dr. Frederick to 3 more medical groups.
Does Dr. Dexter M. Frederick accept Medicare?
Yes. CMS lists Dr. Frederick as accepting Medicare assignment.
What is Dr. Dexter M. Frederick's MIPS score?
Dr. Frederick's MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.
Is Dr. Dexter M. Frederick board certified?
Yes. Dr. Frederick is board certified in pediatrics by the American Board of Pediatrics.
Show 7 more questionsShow fewer questions
Where did Dr. Dexter M. Frederick go to medical school?
Dr. Frederick graduated from Loma Linda University School Of Medicine in 1997.
What drugs does Dr. Dexter M. Frederick prescribe most?
In 2023 Medicare Part D data, Dr. Frederick's most prescribed drugs by claims were Amlodipine Besylate, Atorvastatin Calcium and Lisinopril.
Has Dr. Dexter M. Frederick received payments from drug or device companies?
CMS Open Payments shows $29 in general payments to Dr. Frederick from 1 company from 2019 to 2019. The largest total came from Zimmer Biomet Holdings, Inc.
How long has Dr. Dexter M. Frederick been practicing?
Dr. Frederick graduated from medical school in 1997, 29 years ago.
Does Dr. Dexter M. Frederick do research?
Dmand AI links 1 publication to Dr. Frederick.
Who does Dr. Dexter M. Frederick publish with?
Dr. Frederick's most frequent co-authors are Yvonne Gollin, MD (1 shared paper).
What insurance does Dr. Dexter M. Frederick accept?
Dr. Frederick is in network with 18 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 12. Check the plan with the practice before a visit.
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