Juan R. Kojima, PA
- Medicare services, 2024
- 3,603
- Medicare patients, 2024
- 361
- Part D claims, 2024
- 502
- MIPS score, 2024
- 91
- Hospital affiliations
- 1
- Practice address
- 4150 Regents Park Row, La Jolla, CA 92037
- Practice phone
- Call (858) 550-9697
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Umansky Medical Management, Inc.
La Jolla, California
Find Juan Kojima'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.
Juan R. Kojima is a physician assistant in La Jolla, California
Juan Kojima practices at Umansky Medical Management, Inc. in La Jolla, California.
Juan Kojima's NPI, 1033301528, was assigned on August 17, 2007. Juan Kojima holds California license PA19349.
- NPI
- 1033301528NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6002992161
- NPI enumeration date
- August 17, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (858) 550-9697
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Juan R. Kojima practices at Umansky Medical Management, Inc. in La Jolla, California
Juan Kojima's primary practice is Umansky Medical Management, Inc., at 4150 Regents Park Row, La Jolla, CA 92037 in San Diego County. The practice phone is (858) 550-9697.
- Umansky Medical Management, Inc.4150 Regents Park Row, La Jolla, CA 92037 · San Diego CountyPhone(858) 550-9697
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Juan R. Kojima is affiliated with 3 sites of care and 1 medical group
Juan Kojima's primary practice is Umansky Medical Management, Inc. in La Jolla, California. Juan Kojima is also affiliated with Sharp Memorial Hospital. The medical group on file is Dr. Mona Mofid. Dmand AI also links Juan Kojima 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 Juan R. Kojima's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Juan Kojima practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Umansky Medical Management, Inc. | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Juan R. Kojima is one of 2,381 physician assistants in California
Medical is Juan Kojima's primary specialty in the NPI Registry, under taxonomy code 363AM0700X. Juan Kojima is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA). Juan Kojima is licensed in California.
Specialties and state licenses
- Medical physician assistant, CaliforniaPrimary
Clinical focus
Dmand AI lists acne, acute skin infection, benign or precancerous skin growths, chronic kidney disease, contact dermatitis, itchy rashes, joint cyst and psoriasis among the conditions Juan Kojima treats.
Physician assistants near Juan Kojima
Counts of physician assistants 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
Juan R. Kojima billed Medicare for 3,603 services in 2024
CMS data shows 3,603 Medicare services from Juan Kojima across 14 procedure codes in 2024, for 361 Medicare patients. Medicare paid $117,503 for them. Every service was in an office.
Juan Kojima's Medicare services by type, 2024
- Surgery2,838
- Office and hospital visits765
Juan Kojima compared with the California median for physician assistants, 2024
- Juan Kojima
- California median
- Medicare services
- 3,603vs 27813.0 times
- Medicare patients
- 361vs 1163.1 times
- Part D claims
- 370vs 44016% below
Medians across 1,473 physician assistants in California with Dmand AI profiles that report each measure.
Juan Kojima'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 Juan Kojima and other physician assistants in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Juan R. Kojima treated 361 Medicare patients in 2024, average age 74
CMS counts 361 Medicare patients who saw Juan Kojima in 2024. The largest group is 65 to 74, with 203 patients. 69% of them have high cholesterol, and 61% have high blood pressure. Their average risk score is 0.91, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Juan Kojima's median patient age at 64, with 52% women.
Juan Kojima's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Juan Kojima's Medicare patients by sex, 2024
- Women19353%
- Men16847%
Chronic conditions among Juan Kojima's Medicare patients, 2024
- High cholesterol69%
- High blood pressure61%
- Arthritis45%
- Ischemic heart disease22%
- Mood disorders22%
- Anxiety19%
- Depression19%
- Cancer16%
Share of Medicare patients with each condition. A patient can have several.
Juan Kojima's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women52%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Juan R. Kojima wrote 502 Medicare Part D claims in 2024
In 2024, Juan Kojima wrote 502 Medicare Part D claims for 274 patients. 96% of them were for generic drugs. CMS names the drug for 370 of them, across 12 drugs with 11 or more claims each, at $28,021 in total drug cost.
Juan Kojima's Part D claims by kind of drug, 2024
- Generic480 claims96%
- Brand-name22 claims4%
Juan Kojima'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 Juan Kojima's Part D claims, 2024
- Antibiotics5%26 of 502 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
Juan R. Kojima scored 91 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 91 out of 100 for Juan Kojima for performance year 2024, reported individually. Juan Kojima accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Juan Kojima's MIPS scores, performance year 2024
- 91of 100Final score
- 82of 100Quality
- 40of 100Improvement Activities
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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Juan R. Kojima received $5,269 in industry payments from 2024 to 2025
CMS Open Payments shows 204 general payments to Juan Kojima from 15 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 95% of the total. Amgen Inc. paid the most, $918.
General payments to Juan Kojima by program year, 2024 to 2025
General payments to Juan Kojima by kind, 2024 to 2025
- Food and beverage$5,00995%
- Education$2605%
Companies that paid Juan Kojima the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Juan R. Kojima is board certified in certified physician assistant
- Board certified in certified physician assistant
Source: Dmand AI Professional Profile Data
Sources for Juan R. Kojima'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 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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile 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 Juan R. Kojima
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Juan R. Kojima's NPI number?
Juan R. Kojima's NPI number is 1033301528. It was assigned on August 17, 2007, and it is active in the NPI Registry.
What does Juan R. Kojima specialize in?
Juan R. Kojima is a physician assistant in La Jolla, California. The primary specialty in the NPI Registry is Medical Physician Assistant (taxonomy code 363AM0700X).
Where does Juan R. Kojima practice?
Juan Kojima practices at 4150 Regents Park Row, La Jolla, CA 92037. Juan Kojima's primary practice is Umansky Medical Management, Inc. in La Jolla, California. Dmand AI also links Juan Kojima to 1 group practice or clinic.
What is Juan R. Kojima's office phone number?
The practice phone on file for Juan Kojima is (858) 550-9697.
What is Juan R. Kojima's medical license number?
Juan Kojima holds California license PA19349.
Which hospitals is Juan R. Kojima affiliated with?
Juan Kojima is affiliated with Sharp Memorial Hospital.
What medical group is Juan R. Kojima part of?
Juan Kojima is linked to Dr. Mona Mofid.
Does Juan R. Kojima accept Medicare?
Yes. CMS data shows Juan Kojima billed Medicare for 3,603 services in 2024, and Juan Kojima accepts Medicare assignment.
What is Juan R. Kojima's MIPS score?
Juan Kojima's MIPS final score for performance year 2024 is 91 out of 100, reported individually.
How many Medicare patients does Juan R. Kojima see?
CMS counts 361 Medicare patients who saw Juan Kojima in 2024, with an average age of 74.
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Is Juan R. Kojima board certified?
Yes. Juan Kojima is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA).
What services does Juan R. Kojima bill to Medicare?
In 2024, Juan Kojima's most billed Medicare services were surgery: skin and soft tissue (17003), office visit, established patient (99213) and surgery: skin and soft tissue (17000).
What drugs does Juan R. Kojima prescribe most?
In 2024 Medicare Part D data, Juan Kojima's most prescribed drugs by claims were Fluorouracil, Ketoconazole and Triamcinolone Acetonide.
Has Juan R. Kojima received payments from drug or device companies?
CMS Open Payments shows $5,269 in general payments to Juan Kojima from 15 companies from 2024 to 2025. The largest total came from Amgen Inc.
How long has Juan R. Kojima been practicing?
Juan Kojima graduated from medical school in 2007, 19 years ago.
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