Dr. Sean Sorosh Grammy, DO
- Medicare services, 2024
- 650
- Medicare patients, 2024
- 596
- Part D claims, 2024
- 412
- MIPS score, 2024
- 97
- Hospital affiliations
- 3
- 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. Grammy'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. Sean Sorosh Grammy is an emergency medicine physician in Walnut Creek, California
Dr. Grammy practices at John Muir Medical Center, Walnut Creek in Walnut Creek, California, part of John Muir Health.
Dr. Grammy's NPI, 1982832127, was assigned on June 25, 2009. Dr. Grammy graduated from WesternU College of Osteopathic Medicine of the Pacific in 2009. Dr. Grammy holds California license 20A13122.
- NPI
- 1982832127NPI Registry (opens in a new tab)
- NPI enumeration date
- June 25, 2009
- NPI status
- Active
- Practice phone
- (925) 939-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Sean Sorosh Grammy practices at John Muir Medical Center, Walnut Creek in Walnut Creek, California
Dr. Grammy'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. Sean Sorosh Grammy is affiliated with 3 sites of care and 3 medical groups
Dr. Grammy's primary practice is John Muir Medical Center, Walnut Creek in Walnut Creek, California, part of John Muir Health. Dr. Grammy is also affiliated with Sutter Delta Medical Center. The medical group on file is Vituity. Dmand AI also links Dr. Grammy to 1 more hospital and 2 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 Dr. Sean Sorosh Grammy's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Grammy practices, 3 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 |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dmand AI maps EHR vendors, IT decision makers and buying committees across John Muir Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Sean Sorosh Grammy is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Grammy's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Grammy is board certified in emergency medicine by the AOA Board of Emergency Medicine. Dr. Grammy is licensed in California.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
Emergency medicine physicians near Dr. Grammy
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. Sean Sorosh Grammy billed Medicare for 650 services in 2024
CMS data shows 650 Medicare services from Dr. Grammy across 4 procedure codes in 2024, for 596 Medicare patients. Medicare paid $90,082 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Grammy's Medicare services by type, 2024
- Office and hospital visits597
- Tests and treatments53
Dr. Grammy compared with the California median for emergency medicine physicians, 2024
- Dr. Grammy
- California median
- Medicare services
- 650vs 2652.5 times
- Medicare patients
- 596vs 2432.5 times
- Part D claims
- 233vs 623.8 times
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Grammy'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. Grammy?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Grammy 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. Sean Sorosh Grammy treated 596 Medicare patients in 2024, average age 76
CMS counts 596 Medicare patients who saw Dr. Grammy in 2024. The largest group is 75 to 84, with 208 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 37% are also on Medicaid. Their average risk score is 2.16, 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. Grammy's median patient age at 46, with 55% women.
Dr. Grammy's Medicare patients by age, 2024
Dr. Grammy's Medicare patients by sex, 2024
- Women35059%
- Men24641%
Chronic conditions among Dr. Grammy's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis48%
- Mood disorders41%
- Chronic kidney disease40%
- Depression37%
- Diabetes36%
- Anxiety34%
Share of Medicare patients with each condition. A patient can have several.
Dr. Grammy's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 46
Patient panel by sex, all payers
- Women55%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Sean Sorosh Grammy wrote 412 Medicare Part D claims in 2024
In 2024, Dr. Grammy wrote 412 Medicare Part D claims for 263 patients. 92% of them were for generic drugs. CMS names the drug for 233 of them, across 11 drugs with 11 or more claims each, at $2,149 in total drug cost.
Dr. Grammy's Part D claims by kind of drug, 2024
- Generic377 claims92%
- Brand-name and other35 claims8%
Dr. Grammy'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. Grammy's Part D claims, 2024
- Opioids8%35 of 412 claims
- Antibiotics26%109 of 412 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
Dr. Sean Sorosh Grammy 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. Grammy for performance year 2024, reported as part of a group.
Dr. Grammy'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.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Sean Sorosh Grammy graduated from WesternU College of Osteopathic Medicine of the Pacific
Dr. Grammy graduated from WesternU College of Osteopathic Medicine of the Pacific in 2009. Dr. Grammy is a member of AOA.
- Medical school
- Board certified in emergency medicine
- Board certified in internal medicine
- Board certified in 2014 - 2026
- Board certified in 2009 - 2014
Source: Dmand AI Professional Profile Data
Dr. Sean Sorosh Grammy accepts plans from 5 insurance carriers
Dr. Grammy is in network with 5 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
- Elevance
- HCSC
Plan types Dr. Grammy accepts, by number of carriers
- PPO3
- POS2
- EPO1
- HMO1
- Medicare1
Source: Dmand AI Insurance Network Data
Sources for Dr. Sean Sorosh Grammy'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 | 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. Sean Sorosh Grammy
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. Sean Sorosh Grammy's NPI number?
Dr. Sean Sorosh Grammy's NPI number is 1982832127. It was assigned on June 25, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Sean Sorosh Grammy?
Dr. Sean Sorosh Grammy 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. Sean Sorosh Grammy practice?
Dr. Grammy practices at 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598. Dr. Grammy's primary practice is John Muir Medical Center, Walnut Creek in Walnut Creek, California, part of John Muir Health. Dmand AI also links Dr. Grammy to 1 hospital and 2 medical groups.
What is Dr. Sean Sorosh Grammy's office phone number?
The practice phone on file for Dr. Grammy is (925) 939-3000.
What is Dr. Sean Sorosh Grammy's medical license number?
Dr. Grammy holds California license 20A13122.
Which hospitals is Dr. Sean Sorosh Grammy affiliated with?
Dr. Grammy practices at John Muir Medical Center, Walnut Creek in Walnut Creek, California. Dr. Grammy is also affiliated with Sutter Delta Medical Center. Dmand AI links Dr. Grammy to 1 more hospital.
What medical group is Dr. Sean Sorosh Grammy part of?
Dr. Grammy is linked to Vituity. Dmand AI links Dr. Grammy to 2 more medical groups.
Does Dr. Sean Sorosh Grammy accept Medicare?
Yes. CMS data shows Dr. Grammy billed Medicare for 650 services in 2024.
What is Dr. Sean Sorosh Grammy's MIPS score?
Dr. Grammy'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. Sean Sorosh Grammy see?
CMS counts 596 Medicare patients who saw Dr. Grammy in 2024, with an average age of 76.
Show 6 more questionsShow fewer questions
Is Dr. Sean Sorosh Grammy board certified?
Yes. Dr. Grammy is board certified in emergency medicine by the AOA Board of Emergency Medicine.
What services does Dr. Sean Sorosh Grammy bill to Medicare?
In 2024, Dr. Grammy's most billed Medicare services were emergency department visit (99285), critical care (99291) and emergency department visit (99284).
Where did Dr. Sean Sorosh Grammy go to medical school?
Dr. Grammy graduated from WesternU College of Osteopathic Medicine of the Pacific in 2009.
What drugs does Dr. Sean Sorosh Grammy prescribe most?
In 2024 Medicare Part D data, Dr. Grammy's most prescribed drugs by claims were Cephalexin, Ondansetron ODT and Hydrocodone-Acetaminophen.
How long has Dr. Sean Sorosh Grammy been practicing?
Dr. Grammy graduated from medical school in 2009, 17 years ago.
What insurance does Dr. Sean Sorosh Grammy accept?
Dr. Grammy is in network with 5 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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