Dr. Robert S.y. Cheng, MD
- Publications
- 2
- Industry payments
- $179
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 209 N Delmar Ave, San Gabriel, CA 91775
- Practice phone
- Call (626) 457-8226
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Cheng'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. Robert S.y. Cheng is an OB-GYN in San Gabriel, California
Dr. Cheng practices in San Gabriel, California.
Dr. Cheng's NPI, 1851463178, was assigned on November 14, 2006. Dr. Cheng holds California license A41121.
- NPI
- 1851463178NPI Registry (opens in a new tab)
- NPI enumeration date
- November 14, 2006
- NPI status
- Active
- Practice phone
- (626) 457-8226
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Robert S.y. Cheng's practice address is in San Gabriel, California
Dr. Cheng's practice address in the NPI Registry is 209 N Delmar Ave, San Gabriel, CA 91775. The practice phone is (626) 457-8226.
- NPI Registry address209 N Delmar Ave, San Gabriel, CA 91775Phone(626) 457-8226
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Robert S.y. Cheng's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Cheng practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Cheng's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Robert S.y. Cheng is one of 4,642 OB-GYNs in California
Obstetrics and gynecology is Dr. Cheng's primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. Cheng is licensed in California.
Specialties and state licenses
- Obstetrics and gynecology, CaliforniaPrimary
OB-GYNs near Dr. Cheng
Counts of OB-GYNs 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. Robert S.y. Cheng's patients have a median age of 71
Across all payers, Dmand AI patient panel data puts Dr. Cheng's median patient age at 71, with 100% women.
Dr. Cheng's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Robert S.y. Cheng has 2 publications on record
Dmand AI links 2 papers to Dr. Cheng in 2012. Dr. Cheng's most frequent co-authors are Amy L. Ladd, MD, Aaron J. Berger, MD, PhD and Arthur Ta-Tzu Lee, MD.
Dr. Cheng's most frequent co-authors
- Amy L. Ladd, MD2 shared papers
- Aaron J. Berger, MD, PhD1 shared paper
- Arthur Ta-Tzu Lee, MD1 shared paper
Recent publications by Dr. Cheng
See who Dr. Cheng researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Cheng works with, so you can find a warm path to the right OB-GYNs.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Robert S.y. Cheng received $179 in industry payments from 2016 to 2019
CMS Open Payments shows 6 general payments to Dr. Cheng from 5 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 100% of the total. Radius Health, Inc. paid the most, $68.
General payments to Dr. Cheng by program year, 2016 to 2019
Companies that paid Dr. Cheng the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Robert S.y. Cheng'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 |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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) |
| 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. Robert S.y. Cheng
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. Robert S.y. Cheng's NPI number?
Dr. Robert S.y. Cheng's NPI number is 1851463178. It was assigned on November 14, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert S.y. Cheng?
Dr. Robert S.y. Cheng is an OB-GYN in San Gabriel, California. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. Robert S.y. Cheng practice?
Dr. Cheng practices at 209 N Delmar Ave, San Gabriel, CA 91775.
What is Dr. Robert S.y. Cheng's office phone number?
The practice phone on file for Dr. Cheng is (626) 457-8226.
What is Dr. Robert S.y. Cheng's medical license number?
Dr. Cheng holds California license A41121.
Has Dr. Robert S.y. Cheng received payments from drug or device companies?
CMS Open Payments shows $179 in general payments to Dr. Cheng from 5 companies from 2016 to 2019. The largest total came from Radius Health, Inc.
How long has Dr. Robert S.y. Cheng been practicing?
Dr. Cheng's NPI was assigned in 2006.
Does Dr. Robert S.y. Cheng do research?
Dmand AI links 2 publications to Dr. Cheng.
Who does Dr. Robert S.y. Cheng publish with?
Dr. Cheng's most frequent co-authors are Amy L. Ladd, MD (2 shared papers), Aaron J. Berger, MD, PhD (1 shared paper) and Arthur Ta-Tzu Lee, MD (1 shared paper).
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