Dr. Simon R. Shamass, MD
- Medicare services, 2024
- 1,037
- Medicare patients, 2024
- 445
- Part D claims, 2024
- 702
- Hospital affiliations
- 1
- Industry payments
- $19
- Practice address
- 600 Coffee Rd, Modesto, CA 95355
- Practice phone
- Call (209) 524-1211
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Sutter Valley Medical Foundation
Modesto, California
Find Dr. Shamass' 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. Simon R. Shamass is a hospitalist in Modesto, California
Dr. Shamass practices at Sutter Valley Medical Foundation in Modesto, California.
Dr. Shamass' NPI, 1851718738, was assigned on March 27, 2014. Dr. Shamass graduated from SUNY Downstate Health Sciences University in 2014. Dr. Shamass' Louisiana license number on file is 303045.
- NPI
- 1851718738NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9234357252
- NPI enumeration date
- March 27, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (209) 524-1211
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Simon R. Shamass practices at Sutter Valley Medical Foundation in Modesto, California
Dr. Shamass' primary practice is Sutter Valley Medical Foundation, at 600 Coffee Rd, Modesto, CA 95355 in Stanislaus County. The practice phone is (209) 524-1211.
- Sutter Valley Medical Foundation600 Coffee Rd, Modesto, CA 95355 · Stanislaus CountyPhone(209) 524-1211
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Simon R. Shamass is affiliated with 3 sites of care and 2 medical groups
Dr. Shamass' primary practice is Sutter Valley Medical Foundation in Modesto, California. Dr. Shamass is also affiliated with Memorial Medical Center. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Shamass to 1 more group practice or clinic 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 Dr. Simon R. Shamass' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Shamass practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Sutter Valley Medical Foundation | 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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Dr. Simon R. Shamass is one of 3,186 hospitalists in California
Hospitalist is Dr. Shamass' primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Shamass is board certified in emergency medicine by the American Board of Emergency Medicine. Dmand AI has Dr. Shamass' licenses on file in 2 states: Louisiana and California.
Specialties and state licenses
- Hospitalist, LouisianaPrimary
- California license
Clinical focus
Dmand AI lists sepsis and traumatic coma among the conditions Dr. Shamass treats.
Hospitalists near Dr. Shamass
Counts of hospitalists 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. Simon R. Shamass billed Medicare for 1,037 services in 2024
CMS data shows 1,037 Medicare services from Dr. Shamass across 15 procedure codes in 2024, for 445 Medicare patients. Medicare paid $46,526 for them. Every service was in an office.
Dr. Shamass' Medicare services by type, 2021 to 2024
- 2021
- 2024
- Office and hospital visits
- 2021: 212024: 4762167%
- Drugs given in the office
- 2021: 02024: 289
- Tests and treatments
- 2021: 02024: 156
- Lab and pathology
- 2021: 02024: 116
Dr. Shamass compared with the California median for hospitalists, 2024
- Dr. Shamass
- California median
- Medicare services
- 1,037vs 4302.4 times
- Medicare patients
- 445vs 2012.2 times
- Part D claims
- 525vs 697.6 times
Medians across 2,991 hospitalists in California with Dmand AI profiles that report each measure.
Dr. Shamass' 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. Shamass?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Shamass and other hospitalists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Simon R. Shamass treated 445 Medicare patients in 2024, average age 73
CMS counts 445 Medicare patients who saw Dr. Shamass in 2024. The largest group is 65 to 74, with 168 patients. 75% of them have high cholesterol, and 73% have high blood pressure. 25% are also on Medicaid. Their average risk score is 1.27, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Shamass' median patient age at 45, with 58% women.
Dr. Shamass' Medicare patients by age, 2024
Dr. Shamass' Medicare patients by sex, 2024
- Women29667%
- Men14933%
Chronic conditions among Dr. Shamass' Medicare patients, 2024
- High cholesterol75%
- High blood pressure73%
- Arthritis56%
- Diabetes36%
- Anxiety29%
- Ischemic heart disease26%
- Chronic kidney disease24%
- Mood disorders24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Shamass' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 45
Patient panel by sex, all payers
- Women58%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Simon R. Shamass wrote 702 Medicare Part D claims in 2024
In 2024, Dr. Shamass wrote 702 Medicare Part D claims for 443 patients. 92% of them were for generic drugs. CMS names the drug for 525 of them, across 16 drugs with 11 or more claims each, at $5,062 in total drug cost. In 2023, CMS named 85 claims across 6 drugs.
Dr. Shamass' Part D claims by kind of drug, 2024
- Generic647 claims92%
- Brand-name and other55 claims8%
Dr. Shamass' 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. Shamass' Part D claims, 2024
- Opioids2%11 of 702 claims
- Antibiotics44%310 of 702 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: 852024: 525518%
Drugs named by CMS: 16 in 2024, 6 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
How Dr. Simon R. Shamass takes part in Medicare
Dr. Shamass accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Removal of nail tissue: 1 to 10 procedures (CMS shows small counts as a range)
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Simon R. Shamass received $19 in industry payments in 2019
CMS Open Payments shows 1 general payment to Dr. Shamass from 1 drug or device company in 2019. Food and beverage make up the largest share, 100% of the total. Sanofi Pasteur Inc. paid the most, $19.
Companies that paid Dr. Shamass the most, 2019 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Simon R. Shamass graduated from SUNY Downstate Health Sciences University
Dr. Shamass graduated from SUNY Downstate Health Sciences University in 2014.
- Medical school
- Board certified in emergency medicine
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Simon R. Shamass accepts plans from 9 insurance carriers
Dr. Shamass is in network with 9 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
- +1 more carriersWith a free account
Plan types Dr. Shamass accepts, by number of carriers
- Medicare7
- PPO6
- HMO4
- POS3
- EPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Simon R. Shamass'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 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)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 |
| 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. Simon R. Shamass
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. Simon R. Shamass' NPI number?
Dr. Simon R. Shamass' NPI number is 1851718738. It was assigned on March 27, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Simon R. Shamass?
Dr. Simon R. Shamass is a hospitalist in Modesto, California. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Simon R. Shamass practice?
Dr. Shamass practices at 600 Coffee Rd, Modesto, CA 95355. Dr. Shamass' primary practice is Sutter Valley Medical Foundation in Modesto, California. Dmand AI also links Dr. Shamass to 1 group practice or clinic and 1 medical group.
What is Dr. Simon R. Shamass' office phone number?
The practice phone on file for Dr. Shamass is (209) 524-1211.
What is Dr. Simon R. Shamass' medical license number?
Dr. Shamass' Louisiana license number on file is 303045, one of the licenses on file in 2 states.
Which states has Dr. Simon R. Shamass been licensed in?
Dmand AI has state licenses on file for Dr. Shamass in Louisiana (2016 to 2025) and California (2021 to 2027).
Which hospitals is Dr. Simon R. Shamass affiliated with?
Dr. Shamass is affiliated with Memorial Medical Center.
What medical group is Dr. Simon R. Shamass part of?
Dr. Shamass is linked to Southern California Permanente Medical Group. Dmand AI links Dr. Shamass to 1 more medical group.
Does Dr. Simon R. Shamass accept Medicare?
Yes. CMS data shows Dr. Shamass billed Medicare for 1,037 services in 2024, and Dr. Shamass accepts Medicare assignment.
How many Medicare patients does Dr. Simon R. Shamass see?
CMS counts 445 Medicare patients who saw Dr. Shamass in 2024, with an average age of 73.
Show 7 more questionsShow fewer questions
Is Dr. Simon R. Shamass board certified?
Yes. Dr. Shamass is board certified in emergency medicine by the American Board of Emergency Medicine.
What services does Dr. Simon R. Shamass bill to Medicare?
In 2024, Dr. Shamass' most billed Medicare services were office visit, established patient (99214), injected or infused drug (J0696) and office visit, established patient (99213).
Where did Dr. Simon R. Shamass go to medical school?
Dr. Shamass graduated from SUNY Downstate Health Sciences University in 2014.
What drugs does Dr. Simon R. Shamass prescribe most?
In 2024 Medicare Part D data, Dr. Shamass' most prescribed drugs by claims were Cephalexin, Doxycycline Monohydrate and Azithromycin.
Has Dr. Simon R. Shamass received payments from drug or device companies?
CMS Open Payments shows $19 in general payments to Dr. Shamass from 1 company from 2019 to 2019. The largest total came from Sanofi Pasteur Inc.
How long has Dr. Simon R. Shamass been practicing?
Dr. Shamass graduated from medical school in 2014, 12 years ago.
What insurance does Dr. Simon R. Shamass accept?
Dr. Shamass is in network with 9 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
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