Dr. Mark Allen Slomoff, MD
- Medicare services, 2024
- 116
- Medicare patients, 2024
- 102
- Part D claims, 2024
- 43
- MIPS score, 2024
- 97
- Hospital affiliations
- 2
- Practice address
- 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598
- Practice phone
- Call (925) 939-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Slomoff's professional email, personal email and mobile number
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Dr. Mark Allen Slomoff is an emergency medicine physician in Walnut Creek, California
Dr. Slomoff practices at John Muir Medical Center, Walnut Creek in Walnut Creek, California, part of John Muir Health.
Dr. Slomoff's NPI, 1548284409, was assigned on July 26, 2006. Dr. Slomoff graduated from SUNY Downstate Health Sciences University in 1971. Dr. Slomoff holds California license G23081.
- NPI
- 1548284409NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8123107075
- NPI enumeration date
- July 26, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (925) 939-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 81
- Medical school graduation
- 1971
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark Allen Slomoff practices at John Muir Medical Center, Walnut Creek in Walnut Creek, California
Dr. Slomoff's primary practice is John Muir Medical Center, Walnut Creek, at 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598 in Contra Costa County. The practice phone is (925) 939-3000.
- John Muir Medical Center, Walnut Creek1601 Ygnacio Valley Rd, Walnut Creek, CA 94598 · Contra Costa CountyPhone(925) 939-3000
Source: Dmand AI Affiliation Data
Dr. Mark Allen Slomoff is affiliated with 2 sites of care and 2 medical groups
Dr. Slomoff's primary practice is John Muir Medical Center, Walnut Creek in Walnut Creek, California, part of John Muir Health. The medical group on file is Vituity. Dmand AI also links Dr. Slomoff to 1 more hospital and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark Allen Slomoff's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Slomoff practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| John Muir Medical Center, Walnut Creek | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark Allen Slomoff is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Slomoff's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Slomoff is board certified in internal medicine by the American Board of Internal Medicine. Dr. Slomoff is licensed in California.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
Emergency medicine physicians near Dr. Slomoff
Counts of emergency 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 Allen Slomoff billed Medicare for 116 services in 2024
CMS data shows 116 Medicare services from Dr. Slomoff across 4 procedure codes in 2024, for 102 Medicare patients. Medicare paid $14,908 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Slomoff's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 952024: 1005%
- Tests and treatments
- 2023: 252024: 1636%
Dr. Slomoff compared with the California median for emergency medicine physicians, 2024
- Dr. Slomoff
- California median
- Medicare services
- 116vs 26556% below
- Medicare patients
- 102vs 24358% below
- Part D claims
- 11vs 6282% below
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Slomoff'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 Dr. Slomoff and other emergency medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark Allen Slomoff treated 102 Medicare patients in 2024, average age 79
CMS counts 102 Medicare patients who saw Dr. Slomoff in 2024. The largest group is 75 to 84, with 41 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 21% are also on Medicaid. Their average risk score is 1.99, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Slomoff's median patient age at 57, with 66% women.
Dr. Slomoff's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Slomoff's Medicare patients by sex, 2024
- Women5756%
- Men4544%
Chronic conditions among Dr. Slomoff's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis52%
- Mood disorders42%
- Anxiety40%
- Atrial fibrillation39%
- Depression39%
- Chronic kidney disease38%
Share of Medicare patients with each condition. A patient can have several.
Dr. Slomoff's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 57
Patient panel by sex, all payers
- Women66%
- Men32%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark Allen Slomoff wrote 43 Medicare Part D claims in 2024
In 2024, Dr. Slomoff wrote 43 Medicare Part D claims for 23 patients. 86% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $54 in total drug cost. In 2020, CMS named 13 claims across 1 drug.
Dr. Slomoff's Part D claims by kind of drug, 2024
- Generic37 claims86%
- Brand-name and other6 claims14%
Dr. Slomoff's most prescribed drugs by claims, 2021
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. Slomoff's Part D claims, 2024
- Antibiotics33%14 of 43 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, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 132021: 1115%
Drugs named by CMS: 1 in 2021, 1 in 2020.
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 Allen Slomoff scored 97 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 97 out of 100 for Dr. Slomoff for performance year 2024, reported as part of a group. Dr. Slomoff accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Slomoff's MIPS scores, performance year 2024
- 97of 100Final score
- 90of 100Quality
- 40of 100Improvement Activities
- 78of 100Cost
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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Dr. Mark Allen Slomoff graduated from SUNY Downstate Health Sciences University
Dr. Slomoff graduated from SUNY Downstate Health Sciences University in 1971.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Mark Allen Slomoff accepts plans from 6 insurance carriers
Dr. Slomoff is in network with 6 carriers, including United Healthcare, Aspirus Health Plan and Blue Cross and Blue Shield of Kansas City. PPO plans come from the most carriers, 3. Check the plan with the practice before a visit.
- United Healthcare
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
- Elevance
- HCSC
Plan types Dr. Slomoff accepts, by number of carriers
- PPO3
- Medicare2
- POS2
- EPO1
- HMO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Mark Allen Slomoff'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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| 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 Allen Slomoff
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 Allen Slomoff's NPI number?
Dr. Mark Allen Slomoff's NPI number is 1548284409. It was assigned on July 26, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Allen Slomoff?
Dr. Mark Allen Slomoff is an emergency medicine physician in Walnut Creek, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Mark Allen Slomoff practice?
Dr. Slomoff practices at 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598. Dr. Slomoff's primary practice is John Muir Medical Center, Walnut Creek in Walnut Creek, California, part of John Muir Health. Dmand AI also links Dr. Slomoff to 1 hospital and 1 medical group.
What is Dr. Mark Allen Slomoff's office phone number?
The practice phone on file for Dr. Slomoff is (925) 939-3000.
What is Dr. Mark Allen Slomoff's medical license number?
Dr. Slomoff holds California license G23081.
Which hospitals is Dr. Mark Allen Slomoff affiliated with?
Dr. Slomoff practices at John Muir Medical Center, Walnut Creek in Walnut Creek, California. Dmand AI links Dr. Slomoff to 1 more hospital.
What medical group is Dr. Mark Allen Slomoff part of?
Dr. Slomoff is linked to Vituity. Dmand AI links Dr. Slomoff to 1 more medical group.
Does Dr. Mark Allen Slomoff accept Medicare?
Yes. CMS data shows Dr. Slomoff billed Medicare for 116 services in 2024, and Dr. Slomoff accepts Medicare assignment.
What is Dr. Mark Allen Slomoff's MIPS score?
Dr. Slomoff's MIPS final score for performance year 2024 is 97 out of 100, reported as part of a group.
How many Medicare patients does Dr. Mark Allen Slomoff see?
CMS counts 102 Medicare patients who saw Dr. Slomoff in 2024, with an average age of 79.
Show 6 more questionsShow fewer questions
Is Dr. Mark Allen Slomoff board certified?
Yes. Dr. Slomoff is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Mark Allen Slomoff bill to Medicare?
In 2024, Dr. Slomoff's most billed Medicare services were emergency department visit (99285), critical care (99291) and heart test or procedure (93010).
Where did Dr. Mark Allen Slomoff go to medical school?
Dr. Slomoff graduated from SUNY Downstate Health Sciences University in 1971.
What drugs does Dr. Mark Allen Slomoff prescribe most?
In 2021 Medicare Part D data, Dr. Slomoff's most prescribed drugs by claims were Hydrocodone-Acetaminophen.
How long has Dr. Mark Allen Slomoff been practicing?
Dr. Slomoff graduated from medical school in 1971, 55 years ago.
What insurance does Dr. Mark Allen Slomoff accept?
Dr. Slomoff is in network with 6 carriers, including United Healthcare, Aspirus Health Plan and Blue Cross and Blue Shield of Kansas City. PPO plans come from the most carriers, 3. Check the plan with the practice before a visit.
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