Mark Christopher Johnson, PA-C
- Medicare services, 2024
- 142
- Medicare patients, 2024
- 127
- Part D claims, 2024
- 30
- Hospital affiliations
- 1
- Industry payments
- $153
- Practice address
- 354 Santa Fe Drive, Encinitas, CA 92024
- Practice phone
- Call (760) 753-6501
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Mark Christopher Johnson is a physician assistant in Encinitas, California
Mark Johnson practices at Scripps Memorial Hospital Encinitas in Encinitas, California, part of Scripps Health.
Mark Johnson's NPI, 1578658746, was assigned on October 4, 2006. Mark Johnson holds California license PA21728.
- NPI
- 1578658746NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2567364557
- NPI enumeration date
- October 4, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (760) 753-6501
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Mark Christopher Johnson practices at Scripps Memorial Hospital Encinitas in Encinitas, California
Mark Johnson's primary practice is Scripps Memorial Hospital Encinitas, at 354 Santa Fe Drive, Encinitas, CA 92024 in San Diego County. The practice phone is (760) 753-6501.
- Scripps Memorial Hospital Encinitas354 Santa Fe Drive, Encinitas, CA 92024 · San Diego CountyPhone(760) 753-6501
Source: Dmand AI Affiliation Data
Mark Christopher Johnson is affiliated with 4 sites of care and 4 medical groups
Mark Johnson's primary practice is Scripps Memorial Hospital Encinitas in Encinitas, California, part of Scripps Health. The medical group on file is UC San Diego Health. Dmand AI also links Mark Johnson to 3 more group practices and clinics and 3 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Mark Christopher Johnson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mark Johnson practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Scripps Memorial Hospital Encinitas | Available with a free account |
| +3 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Mark Christopher Johnson is one of 11,482 physician assistants in California
Physician assistant is Mark Johnson's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Mark Johnson is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA). Dmand AI has Mark Johnson's licenses on file in 2 states: California and Connecticut.
Specialties and state licenses
- Physician assistant, CaliforniaPrimary
- Personal emergency response attendant, Connecticut
Physician assistants near Mark Johnson
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
Mark Christopher Johnson billed Medicare for 142 services in 2024
CMS data shows 142 Medicare services from Mark Johnson across 3 procedure codes in 2024, for 127 Medicare patients. Medicare paid $14,994 for them. Every service was in a facility, such as a hospital, rather than an office.
Mark Johnson compared with the California median for physician assistants, 2024
- Mark Johnson
- California median
- Medicare services
- 142vs 20430% below
- Medicare patients
- 127vs 10521% above
- Part D claims
- 24vs 24390% below
Medians across 7,065 physician assistants in California with Dmand AI profiles that report each measure.
Mark 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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Mark Christopher Johnson treated 127 Medicare patients in 2024, average age 76
CMS counts 127 Medicare patients who saw Mark Johnson in 2024. The largest group is 65 to 74, with 57 patients. 75% of them have arthritis, and 75% have high blood pressure. Their average risk score is 1.03, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Mark Johnson's median patient age at 52, with 59% women.
Mark Johnson's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Mark Johnson's Medicare patients by sex, 2024
- Women7660%
- Men5140%
Chronic conditions among Mark Johnson's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol75%
- Anxiety30%
- Depression26%
- Mood disorders26%
- Ischemic heart disease25%
- Chronic kidney disease23%
Share of Medicare patients with each condition. A patient can have several.
Mark 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 52
Patient panel by sex, all payers
- Women59%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Mark Christopher Johnson wrote 30 Medicare Part D claims in 2024
In 2024, Mark Johnson wrote 30 Medicare Part D claims for 21 patients. 100% of them were for generic drugs. CMS names the drug for 24 of them, across 2 drugs with 11 or more claims each, at $181 in total drug cost.
Mark 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 Mark Johnson's Part D claims, 2024
- Opioids40%12 of 30 claims
- Antibiotics53%16 of 30 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 Mark Christopher Johnson takes part in Medicare
Mark 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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Mark Christopher Johnson received $153 in industry payments in 2024
CMS Open Payments shows 2 general payments to Mark Johnson from 2 drug and device companies in 2024. Education make up the largest share, 90% of the total. Medical Device Business Services, Inc. paid the most, $137.
General payments to Mark Johnson by kind, 2024 to 2024
- Education$13790%
- Food and beverage$1610%
Companies that paid Mark Johnson the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Mark Christopher Johnson is board certified in certified physician assistant
- Board certified in certified physician assistant
Source: Dmand AI Professional Profile Data
Sources for Mark Christopher 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 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) |
| 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 Mark Christopher 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 Mark Christopher Johnson's NPI number?
Mark Christopher Johnson's NPI number is 1578658746. It was assigned on October 4, 2006, and it is active in the NPI Registry.
What does Mark Christopher Johnson specialize in?
Mark Christopher Johnson is a physician assistant in Encinitas, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Mark Christopher Johnson practice?
Mark Johnson practices at 354 Santa Fe Drive, Encinitas, CA 92024. Mark Johnson's primary practice is Scripps Memorial Hospital Encinitas in Encinitas, California, part of Scripps Health. Dmand AI also links Mark Johnson to 3 group practices and clinics and 3 medical groups.
What is Mark Christopher Johnson's office phone number?
The practice phone on file for Mark Johnson is (760) 753-6501.
What is Mark Christopher Johnson's medical license number?
Mark Johnson holds California license PA21728, one of the licenses on file in 2 states.
Which states has Mark Christopher Johnson been licensed in?
Dmand AI has state licenses on file for Mark Johnson in California and Connecticut.
Which hospitals is Mark Christopher Johnson affiliated with?
Mark Johnson practices at Scripps Memorial Hospital Encinitas in Encinitas, California.
What medical group is Mark Christopher Johnson part of?
Mark Johnson is linked to UC San Diego Health. Dmand AI links Mark Johnson to 3 more medical groups.
Does Mark Christopher Johnson accept Medicare?
Yes. CMS data shows Mark Johnson billed Medicare for 142 services in 2024, and Mark Johnson accepts Medicare assignment.
How many Medicare patients does Mark Christopher Johnson see?
CMS counts 127 Medicare patients who saw Mark Johnson in 2024, with an average age of 76.
Show 5 more questionsShow fewer questions
Is Mark Christopher Johnson board certified?
Yes. Mark Johnson is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA).
What services does Mark Christopher Johnson bill to Medicare?
In 2024, Mark Johnson's most billed Medicare services were surgery: bones and joints (27130), surgery: bones and joints (27447) and surgery: bones and joints (20985).
What drugs does Mark Christopher Johnson prescribe most?
In 2024 Medicare Part D data, Mark Johnson's most prescribed drugs by claims were Amoxicillin-Clavulanate Potass and Oxycodone HCl.
Has Mark Christopher Johnson received payments from drug or device companies?
CMS Open Payments shows $153 in general payments to Mark Johnson from 2 companies from 2024 to 2024. The largest total came from Medical Device Business Services, Inc.
How long has Mark Christopher Johnson been practicing?
Mark Johnson graduated from medical school in 1999, 27 years ago.
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