Darren Hiroshi Doi, DPM
- Medicare patients, 2024
- 250
- Part D claims, 2024
- 588
- Industry payments
- $32
- Affiliated sites
- 2
- Medical groups
- 2
- Practice address
- 12820 Studebaker Rd, Norwalk, CA 90650
- Practice phone
- Call (562) 868-0787
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mark S Linam DPM a Professional Corp.
Norwalk, California
Find Darren Doi'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.
Darren Hiroshi Doi is a primary podiatric medicine podiatrist in Norwalk, California
Darren Doi practices at Mark S Linam DPM a Professional Corp. in Norwalk, California.
Darren Doi's NPI, 1184112252, was assigned on April 25, 2018. Darren Doi graduated from New York College of Podiatric Medicine in 2018. Darren Doi holds California license E5777.
- NPI
- 1184112252NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1557713278
- NPI enumeration date
- April 25, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (562) 868-0787
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Darren Hiroshi Doi practices at Mark S Linam DPM a Professional Corp. in Norwalk, California
Darren Doi's primary practice is Mark S Linam DPM a Professional Corp., at 12820 Studebaker Rd, Norwalk, CA 90650 in Los Angeles County. The practice phone is (562) 868-0787.
- Mark S Linam DPM a Professional Corp.12820 Studebaker Rd, Norwalk, CA 90650 · Los Angeles CountyPhone(562) 868-0787
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Darren Hiroshi Doi is affiliated with 3 sites of care and 2 medical groups
Darren Doi's primary practice is Mark S Linam DPM a Professional Corp. in Norwalk, California. The medical group on file is Mark Linam, DPM. Dmand AI also links Darren Doi to 2 more group practices and clinics and 1 medical group, each 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 Darren Hiroshi Doi's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Darren Doi practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mark S Linam DPM a Professional Corp. | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Darren Hiroshi Doi is one of 65 primary podiatric medicine podiatrists in California
Primary podiatric medicine is Darren Doi's primary specialty in the NPI Registry, under taxonomy code 213EP1101X. Dmand AI has Darren Doi's licenses on file in 2 states: California and New York.
Specialties and state licenses
- Primary podiatric medicine podiatrist, CaliforniaPrimary
- Student in an organized health care education/training program, New York
Primary podiatric medicine podiatrists near Darren Doi
Counts of primary podiatric medicine podiatrists 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
Darren Hiroshi Doi treated 250 Medicare patients in 2024, average age 76
CMS counts 250 Medicare patients who saw Darren Doi in 2024. The largest group is 85 and over, with 76 patients. 75% of them have high blood pressure, and 74% have high cholesterol. 58% are also on Medicaid. Their average risk score is 2.81, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Darren Doi's median patient age at 69, with 58% women.
Darren Doi's Medicare patients by age, 2024
Darren Doi's Medicare patients by sex, 2024
- Women14558%
- Men10542%
Chronic conditions among Darren Doi's Medicare patients, 2024
- High blood pressure75%
- High cholesterol74%
- Diabetes55%
- Arthritis42%
- Chronic kidney disease38%
- Depression38%
- Mood disorders38%
- Heart failure37%
Share of Medicare patients with each condition. A patient can have several.
Darren Doi's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women58%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Darren Hiroshi Doi wrote 588 Medicare Part D claims in 2024
In 2024, Darren Doi wrote 588 Medicare Part D claims for 137 patients. 98% of them were for generic drugs.
Darren Doi's Part D claims by kind of drug, 2024
- Generic574 claims98%
- Brand-name14 claims2%
Drug classes CMS tracks in Darren Doi's Part D claims, 2024
- Antibiotics5%32 of 588 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Darren Hiroshi Doi ranks in the 81st percentile for removal or shaving of skin growth in Medicare
Darren Doi accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 61 procedures of removal or shaving of skin growth by Darren Doi, more than 81% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Darren Doi ranks in Medicare procedure volume
- Removal of nail tissue
- 74th percentile196 procedures
- Removal or shaving of skin growth
- 81st percentile61 procedures
- Removal of tissue
- 79th percentile52 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Darren Hiroshi Doi received $32 in industry payments in 2025
CMS Open Payments shows 2 general payments to Darren Doi from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Paratek Pharmaceuticals, Inc. paid the most, $32.
Companies that paid Darren Doi the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Darren Hiroshi Doi graduated from New York College of Podiatric Medicine
Darren Doi graduated from New York College of Podiatric Medicine in 2018.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Darren Hiroshi Doi'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 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 (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)Doctors and Clinicians Utilization Data (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 Darren Hiroshi Doi
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Darren Hiroshi Doi's NPI number?
Darren Hiroshi Doi's NPI number is 1184112252. It was assigned on April 25, 2018, and it is active in the NPI Registry.
What does Darren Hiroshi Doi specialize in?
Darren Hiroshi Doi is a primary podiatric medicine podiatrist in Norwalk, California. The primary specialty in the NPI Registry is Primary Podiatric Medicine Podiatrist (taxonomy code 213EP1101X).
Where does Darren Hiroshi Doi practice?
Darren Doi practices at 12820 Studebaker Rd, Norwalk, CA 90650. Darren Doi's primary practice is Mark S Linam DPM a Professional Corp. in Norwalk, California. Dmand AI also links Darren Doi to 2 group practices and clinics and 1 medical group.
What is Darren Hiroshi Doi's office phone number?
The practice phone on file for Darren Doi is (562) 868-0787.
What is Darren Hiroshi Doi's medical license number?
Darren Doi holds California license E5777, one of the licenses on file in 2 states.
Which states has Darren Hiroshi Doi been licensed in?
Dmand AI has state licenses on file for Darren Doi in California and New York.
What medical group is Darren Hiroshi Doi part of?
Darren Doi is linked to Mark Linam, DPM. Dmand AI links Darren Doi to 1 more medical group.
Does Darren Hiroshi Doi accept Medicare?
Yes. CMS lists Darren Doi as accepting Medicare assignment.
How many Medicare patients does Darren Hiroshi Doi see?
CMS counts 250 Medicare patients who saw Darren Doi in 2024, with an average age of 76.
Where did Darren Hiroshi Doi go to medical school?
Darren Doi graduated from New York College of Podiatric Medicine in 2018.
Has Darren Hiroshi Doi received payments from drug or device companies?
CMS Open Payments shows $32 in general payments to Darren Doi from 1 company from 2025 to 2025. The largest total came from Paratek Pharmaceuticals, Inc.
How long has Darren Hiroshi Doi been practicing?
Darren Doi graduated from medical school in 2018, 8 years ago.
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