Dr. Shelly Xiaolei Xing Gammon, MD
- Medicare services, 2023
- 22
- Medicare patients, 2024
- 20
- Part D claims, 2024
- 1,545
- Hospital affiliations
- 1
- Industry payments
- $250
- Practice address
- 3660 Park Sierra Dr, Riverside, CA 92505
- Practice phone
- Call (951) 278-8870
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mission Surgical Group
Riverside, California
Find Dr. Xing Gammon'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. Shelly Xiaolei Xing Gammon is an internist in Riverside, California
Dr. Xing Gammon practices at Mission Surgical Group in Riverside, California.
Dr. Xing Gammon's NPI, 1477799344, was assigned on December 26, 2008. Dr. Xing Gammon graduated from David Geffen School of Medicine at UCLA in 2005. Dr. Xing Gammon holds California license A96907.
- NPI
- 1477799344NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4981751690
- NPI enumeration date
- December 26, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (951) 278-8870
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 43
- Medical school graduation
- 2005
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Shelly Xiaolei Xing Gammon practices at Mission Surgical Group in Riverside, California
Dr. Xing Gammon's primary practice is Mission Surgical Group, at 3660 Park Sierra Dr, Riverside, CA 92505 in Riverside County. The practice phone is (951) 278-8870.
- Mission Surgical Group3660 Park Sierra Dr, Riverside, CA 92505 · Riverside CountyPhone(951) 278-8870
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Shelly Xiaolei Xing Gammon is affiliated with 4 sites of care and 1 medical group
Dr. Xing Gammon's primary practice is Mission Surgical Group in Riverside, California. Dr. Xing Gammon is also affiliated with Moreno Valley Medical Center. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Xing Gammon to 1 more dialysis center and 1 group practice or clinic, 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. Shelly Xiaolei Xing Gammon's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Xing Gammon practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mission Surgical Group | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Shelly Xiaolei Xing Gammon is one of 16,751 internists in California
Internal medicine is Dr. Xing Gammon's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Xing Gammon is board certified in internal medicine by the American Board of Internal Medicine. Dr. Xing Gammon is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists chronic kidney disease among the conditions Dr. Xing Gammon treats.
Internists near Dr. Xing Gammon
Counts of internists 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. Shelly Xiaolei Xing Gammon billed Medicare for 22 services in 2023
CMS data shows 22 Medicare services from Dr. Xing Gammon across 1 procedure code in 2023, all of them office visits, for 20 Medicare patients. Medicare paid $1,873 for them. Every service was in an office.
Dr. Xing Gammon's Medicare services by type, 2017 to 2023
- 2017
- 2023
- Office and hospital visits
- 2017: 192023: 2216%
Dr. Xing Gammon compared with the California median for internists, 2023
- Dr. Xing Gammon
- California median
- Medicare services
- 22vs 36194% below
- Medicare patients
- 20vs 15187% below
- Part D claims
- 1,324vs 4213.1 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Xing Gammon's most billed Medicare procedure codes, 2023
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. Xing Gammon?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Xing Gammon and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Shelly Xiaolei Xing Gammon treated 20 Medicare patients in 2024, average age 59
CMS counts 20 Medicare patients who saw Dr. Xing Gammon in 2024. 75% of them have chronic kidney disease, and 75% have diabetes. Their average risk score is 5.70, 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. Xing Gammon's median patient age at 63, with 52% women.
Chronic conditions among Dr. Xing Gammon's Medicare patients, 2024
- Chronic kidney disease75%
- Diabetes75%
- High blood pressure75%
Share of Medicare patients with each condition. A patient can have several.
Dr. Xing Gammon's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women52%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Shelly Xiaolei Xing Gammon wrote 1,545 Medicare Part D claims in 2024
In 2024, Dr. Xing Gammon wrote 1,545 Medicare Part D claims for 298 patients. 90% of them were for generic drugs. CMS names the drug for 1,324 of them, across 29 drugs with 11 or more claims each, at $116,084 in total drug cost. In 2023, CMS named 1,162 claims across 29 drugs.
Dr. Xing Gammon's Part D claims by kind of drug, 2024
- Generic1,386 claims90%
- Brand-name159 claims10%
Dr. Xing Gammon'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. Xing Gammon's Part D claims, 2024
- Antibiotics2%25 of 1,545 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: 1,1622024: 1,32414%
Drugs named by CMS: 29 in 2024, 29 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. Shelly Xiaolei Xing Gammon offers telehealth to Medicare patients
Dr. Xing Gammon accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Xing Gammon as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Shelly Xiaolei Xing Gammon received $250 in industry payments from 2016 to 2017
CMS Open Payments shows 3 general payments to Dr. Xing Gammon from 2 drug and device companies from 2016 to 2017. Food and beverage make up the largest share, 100% of the total. Relypsa, Inc. paid the most, $237.
General payments to Dr. Xing Gammon by program year, 2016 to 2017
Companies that paid Dr. Xing Gammon the most, 2016 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Shelly Xiaolei Xing Gammon has 3 awards and honors on record
Dmand AI lists 3 awards for Dr. Xing Gammon, most recently NCQA DRP in 2016.
Awards and honors for Dr. Xing Gammon
- 2016
- NCQA DRP
- NCQA PCMH
- 2011
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Shelly Xiaolei Xing Gammon graduated from David Geffen School of Medicine at UCLA
Dr. Xing Gammon graduated from David Geffen School of Medicine at UCLA in 2005.
- Medical school
- Board certified in internal medicine
- Board certified in nephrology
Source: Dmand AI Professional Profile Data
Dr. Shelly Xiaolei Xing Gammon accepts plans from 2 insurance carriers
Dr. Xing Gammon is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. HMO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Xing Gammon accepts, by number of carriers
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Shelly Xiaolei Xing Gammon'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) |
| Industry payments | Open Payments (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. Shelly Xiaolei Xing Gammon
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. Shelly Xiaolei Xing Gammon's NPI number?
Dr. Shelly Xiaolei Xing Gammon's NPI number is 1477799344. It was assigned on December 26, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Shelly Xiaolei Xing Gammon?
Dr. Shelly Xiaolei Xing Gammon is an internist in Riverside, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Shelly Xiaolei Xing Gammon practice?
Dr. Xing Gammon practices at 3660 Park Sierra Dr, Riverside, CA 92505. Dr. Xing Gammon's primary practice is Mission Surgical Group in Riverside, California. Dmand AI also links Dr. Xing Gammon to 1 dialysis center and 1 group practice or clinic.
What is Dr. Shelly Xiaolei Xing Gammon's office phone number?
The practice phone on file for Dr. Xing Gammon is (951) 278-8870.
What is Dr. Shelly Xiaolei Xing Gammon's medical license number?
Dr. Xing Gammon holds California license A96907.
Which hospitals is Dr. Shelly Xiaolei Xing Gammon affiliated with?
Dr. Xing Gammon is affiliated with Moreno Valley Medical Center.
What medical group is Dr. Shelly Xiaolei Xing Gammon part of?
Dr. Xing Gammon is linked to Southern California Permanente Medical Group.
Does Dr. Shelly Xiaolei Xing Gammon accept Medicare?
Yes. CMS data shows Dr. Xing Gammon billed Medicare for 22 services in 2023, and Dr. Xing Gammon accepts Medicare assignment.
Does Dr. Shelly Xiaolei Xing Gammon offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Xing Gammon as offering telehealth services.
How many Medicare patients does Dr. Shelly Xiaolei Xing Gammon see?
CMS counts 20 Medicare patients who saw Dr. Xing Gammon in 2024, with an average age of 59.
Show 7 more questionsShow fewer questions
Is Dr. Shelly Xiaolei Xing Gammon board certified?
Yes. Dr. Xing Gammon is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Shelly Xiaolei Xing Gammon bill to Medicare?
In 2023, Dr. Xing Gammon's most billed Medicare services were office visit, established patient (99214).
Where did Dr. Shelly Xiaolei Xing Gammon go to medical school?
Dr. Xing Gammon graduated from David Geffen School of Medicine at UCLA in 2005.
What drugs does Dr. Shelly Xiaolei Xing Gammon prescribe most?
In 2024 Medicare Part D data, Dr. Xing Gammon's most prescribed drugs by claims were Amlodipine Besylate, Hydralazine HCl and Losartan Potassium.
Has Dr. Shelly Xiaolei Xing Gammon received payments from drug or device companies?
CMS Open Payments shows $250 in general payments to Dr. Xing Gammon from 2 companies from 2016 to 2017. The largest total came from Relypsa, Inc.
How long has Dr. Shelly Xiaolei Xing Gammon been practicing?
Dr. Xing Gammon graduated from medical school in 2005, 21 years ago.
What insurance does Dr. Shelly Xiaolei Xing Gammon accept?
Dr. Xing Gammon is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. HMO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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