CitizenshipEducation, Medical, GraduatePhysician's Role
Dr. Nardine S. Riegels, MD
NPI1871727149PAC ID6507049962
- Medicare services, 2021
- 21
- Medicare patients, 2024
- 12
- Part D claims, 2024
- 78
- Publications
- 4
- Hospital affiliations
- 1
- Practice address
- 380 West MacArthur Boulevard, Oakland, CA 94609
- Practice phone
- Call (510) 251-0121
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Addiction Medicine & Recovery Services at Oakland Medical Center
Outpatient Addiction Treatment · Oakland, California
Find Dr. Riegels' 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. Nardine S. Riegels is an internist in Oakland, California
Dr. Riegels practices at Addiction Medicine & Recovery Services at Oakland Medical Center in Oakland, California.
Dr. Riegels' NPI, 1871727149, was assigned on May 14, 2009. Dr. Riegels graduated from UCSF School of Medicine in 2007. Dr. Riegels holds California license A107716.
NPI and contact details
- NPI
- 1871727149NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6507049962
- NPI enumeration date
- May 14, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (510) 251-0121
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Nardine S. Riegels practices at Addiction Medicine & Recovery Services at Oakland Medical Center in Oakland, California
Dr. Riegels' primary practice is Addiction Medicine & Recovery Services at Oakland Medical Center, at 380 West MacArthur Boulevard, Oakland, CA 94609. The practice phone is (510) 251-0121.
- Addiction Medicine & Recovery Services at Oakland Medical Center380 West MacArthur Boulevard, Oakland, CA 94609Phone(510) 251-0121
Source: Dmand AI Affiliation Data
Dr. Nardine S. Riegels is affiliated with 2 sites of care and 1 medical group
Dr. Riegels' primary practice is Addiction Medicine & Recovery Services at Oakland Medical Center in Oakland, California. Dr. Riegels is also affiliated with Oakland Medical Center. The medical group on file is The Permanente Medical Group, Inc.
Addiction Medicine & Recovery Services at Oakland Medical CenterPrimary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Nardine S. Riegels' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Riegels practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Addiction Medicine & Recovery Services at Oakland Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Nardine S. Riegels is one of 16,751 internists in California
Internal medicine is Dr. Riegels' primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Riegels is board certified in internal medicine by the American Board of Internal Medicine. Dr. Riegels is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists pancreatitis among the conditions Dr. Riegels treats.
Internists near Dr. Riegels
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. Nardine S. Riegels billed Medicare for 21 services in 2021
CMS data shows 21 Medicare services from Dr. Riegels across 1 procedure code in 2021, for 12 Medicare patients. Medicare paid $1,349 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 202121
Medicare patients12
Paid by Medicare$1,349
Procedure codes1
Dr. Riegels' Medicare services by type, 2019 to 2021
- 2019
- 2021
- Office and hospital visits
- 2019: 312021: 2132%
Dr. Riegels compared with the California median for internists, 2021
- Dr. Riegels
- California median
- Medicare services
- 21vs 36194% below
- Medicare patients
- 12vs 15192% below
- Part D claims
- 16vs 42196% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Riegels' 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. Riegels?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Riegels and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Nardine S. Riegels treated 12 Medicare patients in 2024, average age 68
CMS counts 12 Medicare patients who saw Dr. Riegels in 2024. Their average risk score is 2.15, 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. Riegels' median patient age at 73, with 60% women.
Medicare patients, 202412
Average age68
Average risk score2.15
Dr. Riegels' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women60%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Nardine S. Riegels wrote 78 Medicare Part D claims in 2024
In 2024, Dr. Riegels wrote 78 Medicare Part D claims for 24 patients. 85% of them were for generic drugs. CMS names the drug for 16 of them, across 1 drug with 11 or more claims each, at $191 in total drug cost. In 2016, CMS named 266 claims across 13 drugs.
Part D claims, 202478
Drugs named by CMS1
Total drug cost$191
Part D patients24
Dr. Riegels' Part D claims by kind of drug, 2024
- Generic66 claims85%
- Brand-name and other12 claims15%
Dr. Riegels' most prescribed drugs by claims, 2017
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, 2016 to 2017
- 2016
- 2017
- Claims for drugs CMS names
- 2016: 2662017: 1694%
Drugs named by CMS: 1 in 2017, 13 in 2016.
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. Nardine S. Riegels takes part in Medicare
Dr. Riegels 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. Nardine S. Riegels has 4 publications on record
Dmand AI links 4 papers to Dr. Riegels, published from 2019 to 2023. 2023 was the busiest year, with 2. The most frequent topics are Education, Medical, Graduate. Dr. Riegels' most frequent co-authors are Lindsay A. Mazotti, MD, Robert B. Baron, MD, MS and Ami L. Dewaters, MD.
Papers4
Years published2019 to 2023
Topics Dr. Riegels writes about most
- Education, Medical, Graduate
Dr. Riegels' most frequent co-authors
- Lindsay A. Mazotti, MD3 shared papers
- Robert B. Baron, MD, MS1 shared paper
- Ami L. Dewaters, MD1 shared paper
Recent publications by Dr. Riegels
Clinical CompetenceCurriculumDelivery of Health Care
Career ChoiceEducation, Medical, GraduateForecasting
See who Dr. Riegels researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Riegels 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. Nardine S. Riegels has 1 award and honors on record
Dmand AI lists 1 award for Dr. Riegels, most recently CMS Stage 1 2012 in 2011.
Awards and honors for Dr. Riegels
- 2011
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Nardine S. Riegels graduated from UCSF School of Medicine
Dr. Riegels graduated from UCSF School of Medicine in 2007.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Nardine S. Riegels accepts plans from 2 insurance carriers
Dr. Riegels is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Riegels accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Nardine S. Riegels'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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 |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Nardine S. Riegels
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. Nardine S. Riegels' NPI number?
Dr. Nardine S. Riegels' NPI number is 1871727149. It was assigned on May 14, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Nardine S. Riegels?
Dr. Nardine S. Riegels is an internist in Oakland, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Nardine S. Riegels practice?
Dr. Riegels practices at 380 West MacArthur Boulevard, Oakland, CA 94609. Dr. Riegels' primary practice is Addiction Medicine & Recovery Services at Oakland Medical Center in Oakland, California.
What is Dr. Nardine S. Riegels' office phone number?
The practice phone on file for Dr. Riegels is (510) 251-0121.
What is Dr. Nardine S. Riegels' medical license number?
Dr. Riegels holds California license A107716.
Which hospitals is Dr. Nardine S. Riegels affiliated with?
Dr. Riegels is affiliated with Oakland Medical Center.
What medical group is Dr. Nardine S. Riegels part of?
Dr. Riegels is linked to The Permanente Medical Group, Inc.
Does Dr. Nardine S. Riegels accept Medicare?
Yes. CMS data shows Dr. Riegels billed Medicare for 21 services in 2021, and Dr. Riegels accepts Medicare assignment.
How many Medicare patients does Dr. Nardine S. Riegels see?
CMS counts 12 Medicare patients who saw Dr. Riegels in 2024, with an average age of 68.
Is Dr. Nardine S. Riegels board certified?
Yes. Dr. Riegels is board certified in internal medicine by the American Board of Internal Medicine.
Show 7 more questionsShow fewer questions
What services does Dr. Nardine S. Riegels bill to Medicare?
In 2021, Dr. Riegels' most billed Medicare services were hospital inpatient care (99232).
Where did Dr. Nardine S. Riegels go to medical school?
Dr. Riegels graduated from UCSF School of Medicine in 2007.
What drugs does Dr. Nardine S. Riegels prescribe most?
In 2017 Medicare Part D data, Dr. Riegels' most prescribed drugs by claims were Furosemide.
How long has Dr. Nardine S. Riegels been practicing?
Dr. Riegels graduated from medical school in 2007, 19 years ago.
Does Dr. Nardine S. Riegels do research?
Dmand AI links 4 publications to Dr. Riegels, published from 2019 to 2023.
Who does Dr. Nardine S. Riegels publish with?
Dr. Riegels' most frequent co-authors are Lindsay A. Mazotti, MD (3 shared papers), Robert B. Baron, MD, MS (1 shared paper) and Ami L. Dewaters, MD (1 shared paper).
What insurance does Dr. Nardine S. Riegels accept?
Dr. Riegels is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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