Rufina C. Onumajuru
- Medicare services, 2024
- 74
- Medicare patients, 2024
- 58
- Part D claims, 2024
- 1,307
- Industry payments
- $19
- Affiliated sites
- 1
- Practice address
- 733 3rd Street, Mcfarland, CA 93250
- Practice phone
- Call (661) 792-3097
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
McFarland Health Center
FQHC Look-Alike (No Federal Grant) · Mcfarland, California
Find Rufina Onumajuru's professional email, personal email and mobile number
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Rufina C. Onumajuru is a nurse practitioner in Mcfarland, California
Rufina Onumajuru practices at McFarland Health Center in Mcfarland, California.
Rufina Onumajuru's NPI, 1922760321, was assigned on October 13, 2021. Rufina Onumajuru holds California license NP95015559.
- NPI
- 1922760321NPI Registry (opens in a new tab)
- NPI enumeration date
- October 13, 2021
- NPI status
- Active
- Practice phone
- (661) 792-3097
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Rufina C. Onumajuru practices at McFarland Health Center in Mcfarland, California
Rufina Onumajuru's primary practice is McFarland Health Center, at 733 3rd Street, Mcfarland, CA 93250 in Kern County. The practice phone is (661) 792-3097.
- McFarland Health Center733 3rd Street, Mcfarland, CA 93250 · Kern CountyPhone(661) 792-3097
Source: Dmand AI Affiliation Data
Rufina C. Onumajuru is affiliated with 1 site of care and 2 medical groups
Rufina Onumajuru's primary practice is McFarland Health Center in Mcfarland, California. The medical group on file is Community Health Centers of America. Dmand AI also links Rufina Onumajuru to 1 more medical group, named with a free account. Rufina Onumajuru's employer is on file too: a community health center (fqhc).
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Rufina C. Onumajuru's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Rufina Onumajuru practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| McFarland Health Center | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Rufina C. Onumajuru is one of 5,983 nurse practitioners in California
Nurse practitioner is Rufina Onumajuru's primary specialty in the NPI Registry, under taxonomy code 363L00000X. Rufina Onumajuru is licensed in California.
Specialties and state licenses
- Nurse practitioner, CaliforniaPrimary
Clinical focus
Dmand AI lists arthritis, chronic diabetes, high cholesterol, intellectual and developmental disabilities, itchy rashes and tinnitus among the conditions Rufina Onumajuru treats.
Nurse practitioners near Rufina Onumajuru
Counts of nurse practitioners 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
Rufina C. Onumajuru billed Medicare for 74 services in 2024
CMS data shows 74 Medicare services from Rufina Onumajuru across 1 procedure code in 2024, for 58 Medicare patients. Medicare paid $6,382 for them. Every service was in an office.
Rufina Onumajuru compared with the California median for nurse practitioners, 2024
- Rufina Onumajuru
- California median
- Medicare services
- 74vs 27973% below
- Medicare patients
- 58vs 9237% below
- Part D claims
- 918vs 3662.5 times
Medians across 3,047 nurse practitioners in California with Dmand AI profiles that report each measure.
Rufina Onumajuru'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Rufina Onumajuru and other nurse practitioners in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Rufina C. Onumajuru treated 58 Medicare patients in 2024, average age 84
CMS counts 58 Medicare patients who saw Rufina Onumajuru in 2024. The largest group is 85 and over, with 31 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.86, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Rufina Onumajuru's median patient age at 73, with 67% women.
Rufina Onumajuru's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Rufina Onumajuru's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis72%
- Mood disorders69%
- Alzheimer's and dementia67%
- Anxiety67%
- Depression64%
- Heart failure41%
Share of Medicare patients with each condition. A patient can have several.
Rufina Onumajuru's 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
- Women67%
- Men33%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Rufina C. Onumajuru wrote 1,307 Medicare Part D claims in 2024
In 2024, Rufina Onumajuru wrote 1,307 Medicare Part D claims for 185 patients. 87% of them were for generic drugs. CMS names the drug for 918 of them, across 33 drugs with 11 or more claims each, at $54,762 in total drug cost.
Rufina Onumajuru's Part D claims by kind of drug, 2024
- Generic1,143 claims87%
- Brand-name and other164 claims13%
Rufina Onumajuru'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 Rufina Onumajuru's Part D claims, 2024
- Antibiotics4%48 of 1,307 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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
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Rufina C. Onumajuru received $19 in industry payments in 2024
CMS Open Payments shows 1 general payment to Rufina Onumajuru from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. Exact Sciences Corporation paid the most, $19.
Companies that paid Rufina Onumajuru the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Rufina C. Onumajuru'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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 Rufina C. Onumajuru
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What is Rufina C. Onumajuru's NPI number?
Rufina C. Onumajuru's NPI number is 1922760321. It was assigned on October 13, 2021, and it is active in the NPI Registry.
What does Rufina C. Onumajuru specialize in?
Rufina C. Onumajuru is a nurse practitioner in Mcfarland, California. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does Rufina C. Onumajuru practice?
Rufina Onumajuru practices at 733 3rd Street, Mcfarland, CA 93250. Rufina Onumajuru's primary practice is McFarland Health Center in Mcfarland, California. Dmand AI also links Rufina Onumajuru to 1 medical group.
What is Rufina C. Onumajuru's office phone number?
The practice phone on file for Rufina Onumajuru is (661) 792-3097.
What is Rufina C. Onumajuru's medical license number?
Rufina Onumajuru holds California license NP95015559.
What medical group is Rufina C. Onumajuru part of?
Rufina Onumajuru is linked to Community Health Centers of America. Dmand AI links Rufina Onumajuru to 1 more medical group.
Does Rufina C. Onumajuru accept Medicare?
Yes. CMS data shows Rufina Onumajuru billed Medicare for 74 services in 2024.
How many Medicare patients does Rufina C. Onumajuru see?
CMS counts 58 Medicare patients who saw Rufina Onumajuru in 2024, with an average age of 84.
What services does Rufina C. Onumajuru bill to Medicare?
In 2024, Rufina Onumajuru's most billed Medicare services were home visit (99349).
What drugs does Rufina C. Onumajuru prescribe most?
In 2024 Medicare Part D data, Rufina Onumajuru's most prescribed drugs by claims were Furosemide, Levothyroxine Sodium and Simvastatin.
Has Rufina C. Onumajuru received payments from drug or device companies?
CMS Open Payments shows $19 in general payments to Rufina Onumajuru from 1 company from 2024 to 2024. The largest total came from Exact Sciences Corporation.
How long has Rufina C. Onumajuru been practicing?
Rufina Onumajuru graduated from medical school in 2019, 7 years ago.
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