Dr. Mark S. Sullivan, MD
- Medicare services, 2024
- 2,334
- Medicare patients, 2024
- 561
- Part D claims, 2024
- 8,354
- Hospital affiliations
- 3
- Medical group
- 1
- Practice address
- 2720 Low Ct, Fairfield, CA 94534-9771
- Practice phone
- Call (707) 428-2731
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Sutter Regional Medical Foundation
Multi-specialty group site · Fairfield, California
Find Dr. Sullivan'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.
Dr. Mark S. Sullivan is a family medicine physician in Fairfield, California
Dr. Sullivan practices at Sutter Regional Medical Foundation in Fairfield, California.
Dr. Sullivan's NPI, 1871673723, was assigned on October 16, 2006. Dr. Sullivan graduated from Albert Einstein College of Medicine in 1988. Dr. Sullivan holds California license A49206.
- NPI
- 1871673723NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2769432582
- NPI enumeration date
- October 16, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (707) 428-2731
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 64
- Medical school graduation
- 1988
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark S. Sullivan practices at Sutter Regional Medical Foundation in Fairfield, California
Dr. Sullivan's primary practice is Sutter Regional Medical Foundation, at 2720 Low Ct, Fairfield, CA 94534-9771. The practice phone is (707) 428-2731.
- Sutter Regional Medical Foundation2720 Low Ct, Fairfield, CA 94534-9771Phone(707) 428-2731
Source: Dmand AI Affiliation Data
Dr. Mark S. Sullivan is affiliated with 8 sites of care and 1 medical group
Dr. Sullivan's primary practice is Sutter Regional Medical Foundation in Fairfield, California. Dr. Sullivan is also affiliated with Sutter Medical Center, Sacramento. The medical group on file is SGMF Radiology. Dmand AI also links Dr. Sullivan to 2 more hospitals and 4 home health agencies, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Mark S. Sullivan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sullivan practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Sutter Regional Medical Foundation | Available with a free account |
| +7 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark S. Sullivan is one of 15,680 family medicine physicians in California
Family medicine is Dr. Sullivan's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Sullivan is board certified in family medicine by the American Board of Family Medicine. Dr. Sullivan is licensed in California.
Specialties and state licenses
- Family medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists acid reflux, acute gastroduodenitis, acute kidney failure, acute sinusitis, adjustment disease, alcohol use disorders, aneurysm and anxiety among the conditions Dr. Sullivan treats.
Family medicine physicians near Dr. Sullivan
Counts of family medicine physicians 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
Dr. Mark S. Sullivan billed Medicare for 2,334 services in 2024
CMS data shows 2,334 Medicare services from Dr. Sullivan across 13 procedure codes in 2024, for 561 Medicare patients. Medicare paid $167,371 for them. Every service was in an office.
Dr. Sullivan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,3842024: 1,3532%
- Other services
- 2023: 3852024: 782103%
- Tests and treatments
- 2023: 1252024: 18649%
- Surgery
- 2023: 122024: 138%
Dr. Sullivan compared with the California median for family medicine physicians, 2024
- Dr. Sullivan
- California median
- Medicare services
- 2,334vs 2469.5 times
- Medicare patients
- 561vs 1184.8 times
- Part D claims
- 7,640vs 8339.2 times
Medians across 15,349 family medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Sullivan'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 Dr. Sullivan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Sullivan and other family medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark S. Sullivan treated 561 Medicare patients in 2024, average age 73
CMS counts 561 Medicare patients who saw Dr. Sullivan in 2024. The largest group is 65 to 74, with 243 patients. 70% of them have high blood pressure, and 51% have high cholesterol. 19% are also on Medicaid. Their average risk score is 1.00, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Sullivan's median patient age at 67, with 48% women.
Dr. Sullivan's Medicare patients by age, 2024
Dr. Sullivan's Medicare patients by sex, 2024
- Women28150%
- Men28050%
Chronic conditions among Dr. Sullivan's Medicare patients, 2024
- High blood pressure70%
- High cholesterol51%
- Arthritis40%
- Diabetes31%
- Chronic kidney disease20%
- Cancer15%
- Ischemic heart disease13%
- Mood disorders13%
Share of Medicare patients with each condition. A patient can have several.
Dr. Sullivan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women48%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark S. Sullivan wrote 8,354 Medicare Part D claims in 2024
In 2024, Dr. Sullivan wrote 8,354 Medicare Part D claims for 578 patients. 88% of them were for generic drugs. CMS names the drug for 7,640 of them, across 131 drugs with 11 or more claims each, at $710,111 in total drug cost. In 2023, CMS named 7,660 claims across 137 drugs.
Dr. Sullivan's Part D claims by kind of drug, 2024
- Generic7,390 claims88%
- Brand-name922 claims11%
- Other42 claims1%
Dr. Sullivan'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 Dr. Sullivan's Part D claims, 2024
- Opioids6%470 of 8,354 claims
- Antibiotics1%93 of 8,354 claims
- Antipsychotics, patients 65 and over1%43 of 8,354 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 7,6602024: 7,640No change
Drugs named by CMS: 131 in 2024, 137 in 2023.
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
Dr. Mark S. Sullivan offers telehealth to Medicare patients
Dr. Sullivan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Sullivan as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Mark S. Sullivan has 1 award and honors on record
Dmand AI lists 1 award for Dr. Sullivan, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Sullivan
- 2013
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Mark S. Sullivan graduated from Albert Einstein College of Medicine
Dr. Sullivan graduated from Albert Einstein College of Medicine in 1988.
- Medical school
- Board certified in family medicine
Source: Dmand AI Professional Profile Data
Dr. Mark S. Sullivan accepts plans from 13 insurance carriers
Dr. Sullivan is in network with 13 carriers, including Aetna, United Healthcare and Elevance. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- United Healthcare
- Elevance
- Blue Cross Blue Shield of Massachusetts
- Blue Cross Blue Shield of Michigan
- HCSC
- Regence Health Plans
- Alliant Health Plans
- +5 more carriersWith a free account
Plan types Dr. Sullivan accepts, by number of carriers
- PPO9
- HMO6
- Medicare5
- EPO4
- POS2
Source: Dmand AI Insurance Network Data
Sources for Dr. Mark S. Sullivan'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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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 Dr. Mark S. Sullivan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Mark S. Sullivan's NPI number?
Dr. Mark S. Sullivan's NPI number is 1871673723. It was assigned on October 16, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark S. Sullivan?
Dr. Mark S. Sullivan is a family medicine physician in Fairfield, California. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Mark S. Sullivan practice?
Dr. Sullivan practices at 2720 Low Ct, Fairfield, CA 94534-9771. Dr. Sullivan's primary practice is Sutter Regional Medical Foundation in Fairfield, California. Dmand AI also links Dr. Sullivan to 2 hospitals and 4 home health agencies.
What is Dr. Mark S. Sullivan's office phone number?
The practice phone on file for Dr. Sullivan is (707) 428-2731.
What is Dr. Mark S. Sullivan's medical license number?
Dr. Sullivan holds California license A49206.
Which hospitals is Dr. Mark S. Sullivan affiliated with?
Dr. Sullivan is affiliated with Sutter Medical Center, Sacramento. Dmand AI links Dr. Sullivan to 2 more hospitals.
What medical group is Dr. Mark S. Sullivan part of?
Dr. Sullivan is linked to SGMF Radiology.
Does Dr. Mark S. Sullivan accept Medicare?
Yes. CMS data shows Dr. Sullivan billed Medicare for 2,334 services in 2024, and Dr. Sullivan accepts Medicare assignment.
Does Dr. Mark S. Sullivan offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Sullivan as offering telehealth services.
How many Medicare patients does Dr. Mark S. Sullivan see?
CMS counts 561 Medicare patients who saw Dr. Sullivan in 2024, with an average age of 73.
Show 6 more questionsShow fewer questions
Is Dr. Mark S. Sullivan board certified?
Yes. Dr. Sullivan is board certified in family medicine by the American Board of Family Medicine.
What services does Dr. Mark S. Sullivan bill to Medicare?
In 2024, Dr. Sullivan's most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and office visit, established patient (99213).
Where did Dr. Mark S. Sullivan go to medical school?
Dr. Sullivan graduated from Albert Einstein College of Medicine in 1988.
What drugs does Dr. Mark S. Sullivan prescribe most?
In 2024 Medicare Part D data, Dr. Sullivan's most prescribed drugs by claims were Amlodipine Besylate, Atorvastatin Calcium and Rosuvastatin Calcium.
How long has Dr. Mark S. Sullivan been practicing?
Dr. Sullivan graduated from medical school in 1988, 38 years ago.
What insurance does Dr. Mark S. Sullivan accept?
Dr. Sullivan is in network with 13 carriers, including Aetna, United Healthcare and Elevance. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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