Darin Eric Johnson, PA-C
- Medicare services, 2024
- 346
- Medicare patients, 2024
- 68
- Part D claims, 2024
- 547
- Hospital affiliations
- 3
- Industry payments
- $672
- Practice address
- 27700 Medical Center Rd, Mission Viejo, CA 92691
- Practice phone
- Call (949) 365-2447
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mission Hospital - Unit
Acute Care Hospital-Unit · Mission Viejo, California
Find Darin Johnson's professional email, personal email and mobile number
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Darin Eric Johnson is a surgical physician assistant in Mission Viejo, California
Darin Johnson practices at Mission Hospital - Unit in Mission Viejo, California.
Darin Johnson's NPI, 1235295254, was assigned on December 28, 2006. Darin Johnson holds California license PA17664.
- NPI
- 1235295254NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6204887888
- NPI enumeration date
- December 28, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (949) 365-2447
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Darin Eric Johnson practices at Mission Hospital - Unit in Mission Viejo, California
Darin Johnson's primary practice is Mission Hospital - Unit, at 27700 Medical Center Rd, Mission Viejo, CA 92691 in Orange County. The practice phone is (949) 365-2447.
- Mission Hospital - Unit27700 Medical Center Rd, Mission Viejo, CA 92691 · Orange CountyPhone(949) 365-2447
Source: Dmand AI Affiliation Data
Darin Eric Johnson is affiliated with 4 sites of care and 1 medical group
Darin Johnson's primary practice is Mission Hospital - Unit in Mission Viejo, California. Darin Johnson is also affiliated with Providence Mission Hospital. The medical group on file is Orthopaedic Specialty Institute. Dmand AI also links Darin Johnson to 1 more hospital and 1 group practice or clinic, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Darin Eric Johnson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Darin Johnson practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mission Hospital - Unit | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Darin Eric Johnson is one of 883 surgical physician assistants in California
Surgical is Darin Johnson's primary specialty in the NPI Registry, under taxonomy code 363AS0400X. Darin Johnson is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA). Darin Johnson is licensed in California.
Specialties and state licenses
- Surgical physician assistant, CaliforniaPrimary
Surgical physician assistants near Darin Johnson
Counts of surgical 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
Darin Eric Johnson billed Medicare for 346 services in 2024
CMS data shows 346 Medicare services from Darin Johnson across 10 procedure codes in 2024, for 68 Medicare patients. Medicare paid $21,104 for them. Every service was in a facility, such as a hospital, rather than an office.
Darin Johnson compared with the California median for surgical physician assistants, 2024
- Darin Johnson
- California median
- Medicare services
- 346vs 22057% above
- Medicare patients
- 68vs 9024% below
- Part D claims
- 449vs 1552.9 times
Medians across 656 surgical physician assistants in California with Dmand AI profiles that report each measure.
Darin Johnson'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.
Need commercial claims for Darin Johnson?
Medicare shows one payer. Book a meeting to get commercial claims data for Darin Johnson and other surgical physician assistants in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Darin Eric Johnson treated 68 Medicare patients in 2024, average age 75
CMS counts 68 Medicare patients who saw Darin Johnson in 2024. The largest group is 75 to 84, with 36 patients. 75% of them have arthritis, and 75% have high blood pressure. Their average risk score is 1.39, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Darin Johnson's median patient age at 63, with 48% women.
Darin Johnson's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Darin Johnson's Medicare patients by sex, 2024
- Women3856%
- Men3044%
Chronic conditions among Darin Johnson's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol75%
- Anxiety34%
- Chronic kidney disease34%
- Mood disorders34%
- Depression31%
- Ischemic heart disease29%
Share of Medicare patients with each condition. A patient can have several.
Darin Johnson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women48%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Darin Eric Johnson wrote 547 Medicare Part D claims in 2024
In 2024, Darin Johnson wrote 547 Medicare Part D claims for 191 patients. 98% of them were for generic drugs. CMS names the drug for 449 of them, across 8 drugs with 11 or more claims each, at $5,999 in total drug cost.
Darin Johnson's Part D claims by kind of drug, 2024
- Generic536 claims98%
- Brand-name11 claims2%
Darin Johnson'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 Darin Johnson's Part D claims, 2024
- Opioids37%204 of 547 claims
- Antibiotics3%16 of 547 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
How Darin Eric Johnson takes part in Medicare
Darin Johnson 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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Darin Eric Johnson received $672 in industry payments from 2024 to 2025
CMS Open Payments shows 27 general payments to Darin Johnson from 12 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 95% of the total. Globus Medical, Inc. paid the most, $235.
General payments to Darin Johnson by program year, 2024 to 2025
General payments to Darin Johnson by kind, 2024 to 2025
- Food and beverage$63895%
- Speaker and faculty fees$345%
Companies that paid Darin Johnson the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Darin Eric Johnson is board certified in certified physician assistant
- Board certified in certified physician assistant
Source: Dmand AI Professional Profile Data
Sources for Darin Eric Johnson'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 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) |
| 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 Darin Eric Johnson
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Darin Eric Johnson's NPI number?
Darin Eric Johnson's NPI number is 1235295254. It was assigned on December 28, 2006, and it is active in the NPI Registry.
What does Darin Eric Johnson specialize in?
Darin Eric Johnson is a surgical physician assistant in Mission Viejo, California. The primary specialty in the NPI Registry is Surgical Physician Assistant (taxonomy code 363AS0400X).
Where does Darin Eric Johnson practice?
Darin Johnson practices at 27700 Medical Center Rd, Mission Viejo, CA 92691. Darin Johnson's primary practice is Mission Hospital - Unit in Mission Viejo, California. Dmand AI also links Darin Johnson to 1 hospital and 1 group practice or clinic.
What is Darin Eric Johnson's office phone number?
The practice phone on file for Darin Johnson is (949) 365-2447.
What is Darin Eric Johnson's medical license number?
Darin Johnson holds California license PA17664.
Which hospitals is Darin Eric Johnson affiliated with?
Darin Johnson is affiliated with Providence Mission Hospital. Dmand AI links Darin Johnson to 2 more hospitals.
What medical group is Darin Eric Johnson part of?
Darin Johnson is linked to Orthopaedic Specialty Institute.
Does Darin Eric Johnson accept Medicare?
Yes. CMS data shows Darin Johnson billed Medicare for 346 services in 2024, and Darin Johnson accepts Medicare assignment.
How many Medicare patients does Darin Eric Johnson see?
CMS counts 68 Medicare patients who saw Darin Johnson in 2024, with an average age of 75.
Is Darin Eric Johnson board certified?
Yes. Darin Johnson is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA).
Show 4 more questionsShow fewer questions
What services does Darin Eric Johnson bill to Medicare?
In 2024, Darin Johnson's most billed Medicare services were surgery: bones and joints (22614), surgery: brain, spine and nerves (63048) and surgery: brain, spine and nerves (63047).
What drugs does Darin Eric Johnson prescribe most?
In 2024 Medicare Part D data, Darin Johnson's most prescribed drugs by claims were Hydrocodone-Acetaminophen, Tizanidine HCl and Gabapentin.
Has Darin Eric Johnson received payments from drug or device companies?
CMS Open Payments shows $672 in general payments to Darin Johnson from 12 companies from 2024 to 2025. The largest total came from Globus Medical, Inc.
How long has Darin Eric Johnson been practicing?
Darin Johnson graduated from medical school in 2004, 22 years ago.
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