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Dr. Roger Phelps, MD
NPI1629188990
- Medicare services, 2021
- 738
- Part D claims, 2021
- 73
- Publications
- 1
- Insurance carriers
- 3
- State licenses
- 2
- Practice address
- 325 El Cerrito Ave, Piedmont, CA 94611-4103
- Practice phone
- Call (510) 874-1416
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Phelps' professional email, personal email and mobile number
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Dr. Roger Phelps is an infectious disease specialist in Piedmont, California
Dr. Phelps practices in Piedmont, California.
Dr. Phelps' NPI, 1629188990, was assigned on August 30, 2006. Dr. Phelps graduated from The Johns Hopkins University School of Medicine in 1979. Dr. Phelps holds California license C41095.
NPI and contact details
- NPI
- 1629188990NPI Registry (opens in a new tab)
- NPI enumeration date
- August 30, 2006
- NPI status
- Active
- Practice phone
- (510) 874-1416
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 73
- Medical school graduation
- 1979
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Roger Phelps' practice address is in Piedmont, California
Dr. Phelps' practice address in the NPI Registry is 325 El Cerrito Ave, Piedmont, CA 94611-4103. The practice phone is (510) 874-1416.
- NPI Registry address325 El Cerrito Ave, Piedmont, CA 94611-4103Phone(510) 874-1416
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Roger Phelps' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Phelps practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Phelps' practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Roger Phelps is one of 1,054 infectious disease specialists in California
Infectious disease is Dr. Phelps' primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dr. Phelps is board certified in infectious disease by the American Board of Internal Medicine. Dmand AI has Dr. Phelps' licenses on file in 2 states: California and Texas.
Specialties and state licenses
- Infectious disease, CaliforniaPrimary
- Texas license
Infectious disease specialists near Dr. Phelps
Counts of infectious disease specialists 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. Roger Phelps billed Medicare for 738 services in 2021
CMS data shows 738 Medicare services from Dr. Phelps across 4 procedure codes in 2021. Medicare paid $71,053 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2021738
Paid by Medicare$71,053
Procedure codes4
Dr. Phelps' Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 8962021: 73818%
Dr. Phelps compared with the California median for infectious disease specialists, 2021
- Dr. Phelps
- California median
- Medicare services
- 738vs 42972% above
- Part D claims
- 73vs 11939% below
Medians across 930 infectious disease specialists in California with Dmand AI profiles that report each measure.
Dr. Phelps' most billed Medicare procedure codes, 2021
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. Phelps?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Phelps and other infectious disease specialists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Roger Phelps' patients have a median age of 68
Across all payers, Dmand AI patient panel data puts Dr. Phelps' median patient age at 68, with 20% women.
Dr. Phelps' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women20%
- Men80%
Source: Dmand AI Patient Panel Data
Dr. Roger Phelps wrote 73 Medicare Part D claims in 2021
In 2021, Dr. Phelps wrote 73 Medicare Part D claims. They cover 5 drugs, with $102,107 in total drug cost. In 2020, CMS named 127 claims across 9 drugs.
Part D claims, 202173
Drugs named by CMS5
Total drug cost$102,107
Dr. Phelps' most prescribed drugs by claims, 2021
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, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 1272021: 7343%
Drugs named by CMS: 5 in 2021, 9 in 2020.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
For MedTech and pharma teams
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Dr. Roger Phelps has 1 publication on record
Dmand AI links 1 paper to Dr. Phelps in 2015. Dr. Phelps' most frequent co-author is Thomas J. Nuckton, MD.
Papers1
Dr. Phelps' most frequent co-authors
Recent publications by Dr. Phelps
See who Dr. Phelps researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Phelps works with, so you can find a warm path to the right infectious disease specialists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Roger Phelps graduated from The Johns Hopkins University School of Medicine
Dr. Phelps graduated from The Johns Hopkins University School of Medicine in 1979.
- Medical school
- Board certified in infectious disease
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Roger Phelps accepts plans from 3 insurance carriers
Dr. Phelps is in network with 3 carriers, including Aetna, HCSC and Humana. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.
- Aetna
- HCSC
- Humana
Plan types Dr. Phelps accepts, by number of carriers
- Medicare3
- PPO3
- EPO1
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Roger Phelps'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 |
| 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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 |
| 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. Roger Phelps
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. Roger Phelps' NPI number?
Dr. Roger Phelps' NPI number is 1629188990. It was assigned on August 30, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Roger Phelps?
Dr. Roger Phelps is an infectious disease specialist in Piedmont, California. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).
Where does Dr. Roger Phelps practice?
Dr. Phelps practices at 325 El Cerrito Ave, Piedmont, CA 94611-4103.
What is Dr. Roger Phelps' office phone number?
The practice phone on file for Dr. Phelps is (510) 874-1416.
What is Dr. Roger Phelps' medical license number?
Dr. Phelps holds California license C41095, one of the licenses on file in 2 states.
Which states has Dr. Roger Phelps been licensed in?
Dmand AI has state licenses on file for Dr. Phelps in California (1983 to 2027) and Texas (1982 to 1997).
Does Dr. Roger Phelps accept Medicare?
Yes. CMS data shows Dr. Phelps billed Medicare for 738 services in 2021.
Is Dr. Roger Phelps board certified?
Yes. Dr. Phelps is board certified in infectious disease by the American Board of Internal Medicine.
What services does Dr. Roger Phelps bill to Medicare?
In 2021, Dr. Phelps' most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99233) and hospital inpatient care (99223).
Where did Dr. Roger Phelps go to medical school?
Dr. Phelps graduated from The Johns Hopkins University School of Medicine in 1979.
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What drugs does Dr. Roger Phelps prescribe most?
In 2021 Medicare Part D data, Dr. Phelps' most prescribed drugs by claims were Biktarvy, Famotidine and Lorazepam.
How long has Dr. Roger Phelps been practicing?
Dr. Phelps graduated from medical school in 1979, 47 years ago.
Does Dr. Roger Phelps do research?
Dmand AI links 1 publication to Dr. Phelps.
Who does Dr. Roger Phelps publish with?
Dr. Phelps' most frequent co-authors are Thomas J. Nuckton, MD (1 shared paper).
What insurance does Dr. Roger Phelps accept?
Dr. Phelps is in network with 3 carriers, including Aetna, HCSC and Humana. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.
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