AdrenalectomyAdrenal Gland NeoplasmsAdrenal Glands
Dr. Yan Yan, MD
NPI1154663771PAC ID2163753302
- Medicare services, 2024
- 719
- Medicare patients, 2024
- 39
- Part D claims, 2024
- 1,082
- Publications
- 9
- Industry payments
- $3,925
- Practice address
- 2262 Camino Ramon, San Ramon, CA 94583
- Practice phone
- Call (650) 651-3668
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Bello Allergy and Wellness Center
San Ramon, California
Find Dr. Yan's professional email, personal email and mobile number
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Dr. Yan Yan is an allergist and immunologist in San Ramon, California
Dr. Yan practices at Bello Allergy and Wellness Center in San Ramon, California.
Dr. Yan's NPI, 1154663771, was assigned on March 21, 2013. Dr. Yan graduated from Perelman School of Medicine - Philadelphia in 2014. Dr. Yan's California license number on file is A141993.
NPI and contact details
- NPI
- 1154663771NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2163753302
- NPI enumeration date
- March 21, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (650) 651-3668
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 46
- 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. Yan Yan practices at Bello Allergy and Wellness Center in San Ramon, California
Dr. Yan's primary practice is Bello Allergy and Wellness Center, at 2262 Camino Ramon, San Ramon, CA 94583 in Contra Costa County. The practice phone is (650) 651-3668.
- Bello Allergy and Wellness Center2262 Camino Ramon, San Ramon, CA 94583 · Contra Costa CountyPhone(650) 651-3668
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Yan Yan is affiliated with 3 sites of care and 1 medical group
Dr. Yan's primary practice is Bello Allergy and Wellness Center in San Ramon, California. The medical group on file is North East Medical Services (NEMS). Dmand AI also links Dr. Yan to 1 more community health center and 1 physician office, each named with a free account.
Bello Allergy and Wellness CenterPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Yan Yan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Yan practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Bello Allergy and Wellness Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Yan Yan is one of 386 allergists and immunologists in California
Allergy and immunology is Dr. Yan's primary specialty in the NPI Registry, under taxonomy code 207K00000X. Dr. Yan is board certified in allergy & immunology by the American Board of Allergy and Immunology. Dr. Yan has a license on file in California.
Specialties and state licenses
- Allergy and immunology, CaliforniaPrimary
Clinical focus
Dmand AI lists asthma, chronic nasal allergies and hives among the conditions Dr. Yan treats.
Allergists and immunologists near Dr. Yan
Counts of allergists and immunologists 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. Yan Yan billed Medicare for 719 services in 2024
CMS data shows 719 Medicare services from Dr. Yan across 4 procedure codes in 2024, for 39 Medicare patients. Medicare paid $14,013 for them. Every service was in an office.
Medicare services, 2024719
Medicare patients39
Paid by Medicare$14,013
Procedure codes4
Dr. Yan's Medicare services by type, 2022 to 2024
- 2022
- 2024
- Tests and treatments
- 2022: 02024: 616
- Office and hospital visits
- 2022: 02024: 103
- Surgery
- 2022: 202024: 0100%
Dr. Yan compared with the California median for allergists and immunologists, 2024
- Dr. Yan
- California median
- Medicare services
- 719vs 1,84061% below
- Medicare patients
- 39vs 14573% below
- Part D claims
- 941vs 2593.6 times
Medians across 368 allergists and immunologists in California with Dmand AI profiles that report each measure.
Dr. Yan'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. Yan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Yan and other allergists and immunologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Yan Yan treated 39 Medicare patients in 2024, average age 75
CMS counts 39 Medicare patients who saw Dr. Yan in 2024. The largest group is 65 to 74, with 20 patients. 75% of them have high cholesterol, and 69% have high blood pressure. 51% are also on Medicaid. Their average risk score is 1.09, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Yan's median patient age at 39, with 54% women.
Medicare patients, 202439
Average age75
Average risk score1.09
Also on Medicaid51%
Dr. Yan's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Yan's Medicare patients by sex, 2024
- Women2359%
- Men1641%
Chronic conditions among Dr. Yan's Medicare patients, 2024
- High cholesterol75%
- High blood pressure69%
- Diabetes41%
- Arthritis38%
- Chronic kidney disease33%
- Osteoporosis33%
- Asthma31%
Share of Medicare patients with each condition. A patient can have several.
Dr. Yan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 39
Patient panel by sex, all payers
- Women54%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Yan Yan wrote 1,082 Medicare Part D claims in 2024
In 2024, Dr. Yan wrote 1,082 Medicare Part D claims for 158 patients. 75% of them were for generic drugs. CMS names the drug for 941 of them, across 24 drugs with 11 or more claims each, at $335,609 in total drug cost. In 2023, CMS named 459 claims across 14 drugs.
Part D claims, 20241,082
Drugs named by CMS24
Total drug cost$335,609
Part D patients158
Dr. Yan's Part D claims by kind of drug, 2024
- Generic815 claims75%
- Brand-name267 claims25%
Dr. Yan'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 4592024: 941105%
Drugs named by CMS: 24 in 2024, 14 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. Yan Yan offers telehealth to Medicare patients
Dr. Yan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Yan as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Yan Yan has 9 publications on record
Dmand AI links 9 papers to Dr. Yan, published from 2013 to 2015. The most frequent topics are Arteriovenous Shunt, Surgical, Renal Dialysis and Veins. Dr. Yan has published most often in J Vasc Interv Radiol. Dr. Yan's most frequent co-authors are Melissa Marie Asmar, Mandeep Sanat Dagli, MD and Douglas Leon Fraker, MD.
Papers9
Years published2013 to 2015
Dr. Yan's papers by year, 2013 to 2015
Topics Dr. Yan writes about most
- Arteriovenous Shunt, Surgical
- Renal Dialysis
- Veins
- Adrenalectomy
- Adrenal Glands
- Aldosterone
- Blood Specimen Collection
- Brachial Artery
Dr. Yan's most frequent co-authors
- Melissa Marie Asmar2 shared papers
- Mandeep Sanat Dagli, MD2 shared papers
- Douglas Leon Fraker, MD2 shared papers
Recent publications by Dr. Yan
J Vasc Interv Radiol
AdrenalectomyAdrenal GlandsAldosterone
Arteriovenous Shunt, SurgicalBrachial ArteryBrachiocephalic Veins
AJR Am J Roentgenol
AngioplastyArmArteriovenous Shunt, Surgical
J Vasc Interv Radiol
Device RemovalDissectionPhlebography
See who Dr. Yan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Yan works with, so you can find a warm path to the right allergists and immunologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Yan Yan received $3,925 in industry payments from 2017 to 2025
CMS Open Payments shows 127 general payments to Dr. Yan from 24 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 88% of the total. GlaxoSmithKline, LLC. paid the most, $746.
General payments to Dr. Yan by program year, 2017 to 2025
General payments to Dr. Yan by kind, 2017 to 2025
$3.9Kin total
- Food and beverage$3,43888%
- Speaker and faculty fees$3509%
- Education$1373%
Companies that paid Dr. Yan the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Yan Yan graduated from Perelman School of Medicine - Philadelphia
Dr. Yan graduated from Perelman School of Medicine - Philadelphia in 2014.
- Medical school
- Board certified in allergy & immunology
- Board certified in pediatrics
Source: Dmand AI Professional Profile Data
Dr. Yan Yan accepts plans from 15 insurance carriers
Dr. Yan is in network with 15 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Elevance
- United Healthcare
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Alliant Health Plans
- +7 more carriersWith a free account
Plan types Dr. Yan accepts, by number of carriers
- PPO9
- Medicare8
- HMO6
- POS5
- EPO4
Source: Dmand AI Insurance Network Data
Sources for Dr. Yan Yan'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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Yan Yan
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. Yan Yan's NPI number?
Dr. Yan Yan's NPI number is 1154663771. It was assigned on March 21, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Yan Yan?
Dr. Yan Yan is an allergist and immunologist in San Ramon, California. The primary specialty in the NPI Registry is Allergy & Immunology Physician (taxonomy code 207K00000X).
Where does Dr. Yan Yan practice?
Dr. Yan practices at 2262 Camino Ramon, San Ramon, CA 94583. Dr. Yan's primary practice is Bello Allergy and Wellness Center in San Ramon, California. Dmand AI also links Dr. Yan to 1 community health center and 1 physician office.
What is Dr. Yan Yan's office phone number?
The practice phone on file for Dr. Yan is (650) 651-3668.
What is Dr. Yan Yan's medical license number?
Dr. Yan's California license number on file is A141993.
What medical group is Dr. Yan Yan part of?
Dr. Yan is linked to North East Medical Services (NEMS).
Does Dr. Yan Yan accept Medicare?
Yes. CMS data shows Dr. Yan billed Medicare for 719 services in 2024, and Dr. Yan accepts Medicare assignment.
Does Dr. Yan Yan offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Yan as offering telehealth services.
How many Medicare patients does Dr. Yan Yan see?
CMS counts 39 Medicare patients who saw Dr. Yan in 2024, with an average age of 75.
Is Dr. Yan Yan board certified?
Yes. Dr. Yan is board certified in allergy & immunology by the American Board of Allergy and Immunology.
Show 8 more questionsShow fewer questions
What services does Dr. Yan Yan bill to Medicare?
In 2024, Dr. Yan's most billed Medicare services were allergy test or treatment (95004), office visit, established patient (99214) and office visit, new patient (99204).
Where did Dr. Yan Yan go to medical school?
Dr. Yan graduated from Perelman School of Medicine - Philadelphia in 2014.
What drugs does Dr. Yan Yan prescribe most?
In 2024 Medicare Part D data, Dr. Yan's most prescribed drugs by claims were Levocetirizine Dihydrochloride, Azelastine HCl and Ammonium Lactate.
Has Dr. Yan Yan received payments from drug or device companies?
CMS Open Payments shows $3,925 in general payments to Dr. Yan from 24 companies from 2017 to 2025. The largest total came from GlaxoSmithKline, LLC.
How long has Dr. Yan Yan been practicing?
Dr. Yan graduated from medical school in 2014, 12 years ago.
Does Dr. Yan Yan do research?
Dmand AI links 9 publications to Dr. Yan, published from 2013 to 2015.
Who does Dr. Yan Yan publish with?
Dr. Yan's most frequent co-authors are Melissa Marie Asmar (2 shared papers), Mandeep Sanat Dagli, MD (2 shared papers) and Douglas Leon Fraker, MD (2 shared papers).
What insurance does Dr. Yan Yan accept?
Dr. Yan is in network with 15 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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