Dr. Chetachi A. Okereke, MBBS, MD
- Medicare services, 2016
- 93
- Part D claims, 2024
- 1,765
- Industry payments
- $149
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 901 Nevin Ave, Richmond, CA 94801
- Practice phone
- Call (510) 307-1555
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Richmond Medical Center
Richmond, California
Find Dr. Okereke'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. Chetachi A. Okereke is a rheumatologist in Richmond, California
Dr. Okereke practices at Richmond Medical Center in Richmond, California.
Dr. Okereke's NPI, 1083842199, was assigned on June 26, 2009. Dr. Okereke graduated from University of Port Harcourt College of Health Services in 2001. Dr. Okereke's California license number on file is A109220.
- NPI
- 1083842199NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3274760830
- NPI enumeration date
- June 26, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (510) 307-1555
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Chetachi A. Okereke practices at Richmond Medical Center in Richmond, California
Dr. Okereke's primary practice is Richmond Medical Center, at 901 Nevin Ave, Richmond, CA 94801 in Contra Costa County. The practice phone is (510) 307-1555.
- Richmond Medical Center901 Nevin Ave, Richmond, CA 94801 · Contra Costa CountyPhone(510) 307-1555
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Chetachi A. Okereke is affiliated with 2 sites of care and 1 medical group
Dr. Okereke's primary practice is Richmond Medical Center in Richmond, California. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Okereke to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Chetachi A. Okereke's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Okereke practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Richmond 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. Chetachi A. Okereke is one of 821 rheumatologists in California
Rheumatology is Dr. Okereke's primary specialty in the NPI Registry, under taxonomy code 207RR0500X. Dr. Okereke is board certified in internal medicine by the American Board of Internal Medicine. Dr. Okereke has a license on file in California.
Specialties and state licenses
- Rheumatology, CaliforniaPrimary
Rheumatologists near Dr. Okereke
Counts of rheumatologists 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. Chetachi A. Okereke billed Medicare for 93 services in 2016
CMS data shows 93 Medicare services from Dr. Okereke across 3 procedure codes in 2016. Medicare paid $5,530 for them. Every service was in an office.
Dr. Okereke's Medicare services by type, 2016
- Office and hospital visits76
- Drugs given in the office17
Dr. Okereke compared with the California median for rheumatologists, 2016
- Dr. Okereke
- California median
- Medicare services
- 93vs 90090% below
- Part D claims
- 1,604vs 96267% above
Medians across 773 rheumatologists in California with Dmand AI profiles that report each measure.
Dr. Okereke's most billed Medicare procedure codes, 2016
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. Okereke?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Okereke and other rheumatologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Chetachi A. Okereke's patients have a median age of 57
Across all payers, Dmand AI patient panel data puts Dr. Okereke's median patient age at 57, with 85% women.
Dr. Okereke's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 57
Patient panel by sex, all payers
- Women85%
- Men13%
Source: Dmand AI Patient Panel Data
Dr. Chetachi A. Okereke wrote 1,765 Medicare Part D claims in 2024
In 2024, Dr. Okereke wrote 1,765 Medicare Part D claims for 479 patients. 77% of them were for generic drugs. CMS names the drug for 1,604 of them, across 23 drugs with 11 or more claims each, at $1,037,773 in total drug cost. In 2023, CMS named 1,419 claims across 20 drugs.
Dr. Okereke's Part D claims by kind of drug, 2024
- Generic1,365 claims77%
- Brand-name400 claims23%
Dr. Okereke'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,4192024: 1,60413%
Drugs named by CMS: 23 in 2024, 20 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
Dr. Chetachi A. Okereke offers telehealth to Medicare patients
Dr. Okereke accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Okereke as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Chetachi A. Okereke received $149 in industry payments from 2016 to 2017
CMS Open Payments shows 2 general payments to Dr. Okereke from 2 drug and device companies from 2016 to 2017. Food and beverage make up the largest share, 100% of the total. Gilead Sciences, Inc. paid the most, $125.
General payments to Dr. Okereke by program year, 2016 to 2017
Companies that paid Dr. Okereke the most, 2016 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Chetachi A. Okereke has 1 award and honors on record
Dmand AI lists 1 award for Dr. Okereke, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Okereke
- 2013
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Chetachi A. Okereke graduated from University of Port Harcourt College of Health Services
Dr. Okereke graduated from University of Port Harcourt College of Health Services in 2001. Dr. Okereke is a member of ACR.
- Medical school
- Board certified in internal medicine
- Board certified in rheumatology
Source: Dmand AI Professional Profile Data
Dr. Chetachi A. Okereke accepts plans from 2 insurance carriers
Dr. Okereke 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. Okereke accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Chetachi A. Okereke'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 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Chetachi A. Okereke
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. Chetachi A. Okereke's NPI number?
Dr. Chetachi A. Okereke's NPI number is 1083842199. It was assigned on June 26, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Chetachi A. Okereke?
Dr. Chetachi A. Okereke is a rheumatologist in Richmond, California. The primary specialty in the NPI Registry is Rheumatology Physician (taxonomy code 207RR0500X).
Where does Dr. Chetachi A. Okereke practice?
Dr. Okereke practices at 901 Nevin Ave, Richmond, CA 94801. Dr. Okereke's primary practice is Richmond Medical Center in Richmond, California. Dmand AI also links Dr. Okereke to 1 group practice or clinic.
What is Dr. Chetachi A. Okereke's office phone number?
The practice phone on file for Dr. Okereke is (510) 307-1555.
What is Dr. Chetachi A. Okereke's medical license number?
Dr. Okereke's California license number on file is A109220.
What medical group is Dr. Chetachi A. Okereke part of?
Dr. Okereke is linked to The Permanente Medical Group, Inc.
Does Dr. Chetachi A. Okereke accept Medicare?
Yes. CMS data shows Dr. Okereke billed Medicare for 93 services in 2016, and Dr. Okereke accepts Medicare assignment.
Does Dr. Chetachi A. Okereke offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Okereke as offering telehealth services.
Is Dr. Chetachi A. Okereke board certified?
Yes. Dr. Okereke is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Chetachi A. Okereke bill to Medicare?
In 2016, Dr. Okereke's most billed Medicare services were office visit, established patient (99214), injected or infused drug (J3301) and office visit, established patient (99213).
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Where did Dr. Chetachi A. Okereke go to medical school?
Dr. Okereke graduated from University of Port Harcourt College of Health Services in 2001.
What drugs does Dr. Chetachi A. Okereke prescribe most?
In 2024 Medicare Part D data, Dr. Okereke's most prescribed drugs by claims were Prednisone, Methotrexate and Hydroxychloroquine Sulfate.
Has Dr. Chetachi A. Okereke received payments from drug or device companies?
CMS Open Payments shows $149 in general payments to Dr. Okereke from 2 companies from 2016 to 2017. The largest total came from Gilead Sciences, Inc.
How long has Dr. Chetachi A. Okereke been practicing?
Dr. Okereke graduated from medical school in 2001, 25 years ago.
What insurance does Dr. Chetachi A. Okereke accept?
Dr. Okereke 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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