Dr. Robert Chan Ang, MD
- Medicare services, 2016
- 79
- Part D claims, 2016
- 22
- Industry payments
- $1,453
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 500 E. Remington Dr. #18 #18, Sunnyvale, CA 94087
- Practice phone
- Call (408) 730-5858
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Robert C. Ang
Multi-specialty group site · Sunnyvale, California
Find Dr. Ang'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 Chan Ang is a sleep medicine (internal medicine) physician in Sunnyvale, California
Dr. Ang practices at Robert C. Ang in Sunnyvale, California.
Dr. Ang's NPI, 1225219025, was assigned on November 20, 2007. Dr. Ang graduated from University of Santo Tomas in 1981. Dr. Ang's California license number on file is A55893.
- NPI
- 1225219025NPI Registry (opens in a new tab)
- NPI enumeration date
- November 20, 2007
- NPI status
- Active
- Practice phone
- (408) 730-5858
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1981
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Robert Chan Ang practices at Robert C. Ang in Sunnyvale, California
Dr. Ang's primary practice is Robert C. Ang, at 500 E. Remington Dr. #18 #18, Sunnyvale, CA 94087. The practice phone is (408) 730-5858.
- Robert C. Ang500 E. Remington Dr. #18 #18, Sunnyvale, CA 94087Phone(408) 730-5858
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Robert Chan Ang is affiliated with 1 site of care and 1 medical group
Dr. Ang's primary practice is Robert C. Ang in Sunnyvale, California. Dmand AI also links Dr. Ang to 1 medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Robert Chan Ang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ang practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Robert C. Ang | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Robert Chan Ang is one of 115 sleep medicine (internal medicine) physicians in California
Internal medicine is Dr. Ang's primary specialty in the NPI Registry, under taxonomy code 207RS0012X. The record also lists sleep medicine. Dr. Ang is board certified in critical care medicine by the American Board of Internal Medicine. Dr. Ang has a license on file in California.
Specialties and state licenses
- Sleep medicine (internal medicine), CaliforniaPrimary
Sleep medicine (internal medicine) physicians near Dr. Ang
Counts of sleep medicine (internal 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. Robert Chan Ang billed Medicare for 79 services in 2016
CMS data shows 79 Medicare services from Dr. Ang across 1 procedure code in 2016, all of them office visits. Medicare paid $6,966 for them. Every service was in an office.
Dr. Ang compared with the California median for sleep medicine (internal medicine) physicians, 2016
- Dr. Ang
- California median
- Medicare services
- 79vs 45483% below
- Part D claims
- 22vs 12482% below
Medians across 111 sleep medicine (internal medicine) physicians in California with Dmand AI profiles that report each measure.
Dr. Ang's most billed Medicare procedure codes, 2016
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. Ang?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ang and other sleep medicine (internal medicine) physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Robert Chan Ang's patients have a median age of 62
Across all payers, Dmand AI patient panel data puts Dr. Ang's median patient age at 62, with 50% women.
Dr. Ang's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Dr. Robert Chan Ang wrote 22 Medicare Part D claims in 2016
In 2016, Dr. Ang wrote 22 Medicare Part D claims. They cover 2 drugs, with $3,857 in total drug cost.
Dr. Ang's most prescribed drugs by claims, 2016
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Robert Chan Ang received $1,453 in industry payments from 2016 to 2023
CMS Open Payments shows 15 general payments to Dr. Ang from 9 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $520.
General payments to Dr. Ang by program year, 2016 to 2023
Companies that paid Dr. Ang the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Robert Chan Ang has 3 awards and honors on record
Dmand AI lists 3 awards for Dr. Ang, most recently President in 2011.
Awards and honors for Dr. Ang
- 2011
- President
- 1981
- Graduate Cum Laude
- 1977
- Graduste Cum Laude
Source: Dmand AI Professional Profile Data
Dr. Robert Chan Ang graduated from University of Santo Tomas
Dr. Ang graduated from University of Santo Tomas in 1981. Dr. Ang is a member of AASM, ACCP, ACP, ASBP, ATS and CMA.
- Medical school
- Board certified in critical care medicine
- Board certified in internal medicine
- Board certified in pulmonary disease
- Board certified in sleep medicine
- Board certified in obesity medicine
Source: Dmand AI Professional Profile Data
Dr. Robert Chan Ang accepts plans from 4 insurance carriers
Dr. Ang is in network with 4 carriers, including Elevance, Blue Cross Blue Shield of Massachusetts and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
- Elevance
- Blue Cross Blue Shield of Massachusetts
- Blue Cross Blue Shield of Michigan
- HCSC
Plan types Dr. Ang accepts, by number of carriers
- Medicare4
- PPO4
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Robert Chan Ang'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 DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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. Robert Chan Ang
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 Chan Ang's NPI number?
Dr. Robert Chan Ang's NPI number is 1225219025. It was assigned on November 20, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert Chan Ang?
Dr. Robert Chan Ang is a sleep medicine (internal medicine) physician in Sunnyvale, California. The primary specialty in the NPI Registry is Sleep Medicine (Internal Medicine) Physician (taxonomy code 207RS0012X).
Where does Dr. Robert Chan Ang practice?
Dr. Ang practices at 500 E. Remington Dr. #18 #18, Sunnyvale, CA 94087. Dr. Ang's primary practice is Robert C. Ang in Sunnyvale, California. Dmand AI also links Dr. Ang to 1 medical group.
What is Dr. Robert Chan Ang's office phone number?
The practice phone on file for Dr. Ang is (408) 730-5858.
What is Dr. Robert Chan Ang's medical license number?
Dr. Ang's California license number on file is A55893.
Does Dr. Robert Chan Ang accept Medicare?
Yes. CMS data shows Dr. Ang billed Medicare for 79 services in 2016.
Is Dr. Robert Chan Ang board certified?
Yes. Dr. Ang is board certified in critical care medicine by the American Board of Internal Medicine.
What services does Dr. Robert Chan Ang bill to Medicare?
In 2016, Dr. Ang's most billed Medicare services were office visit, established patient (99214).
Where did Dr. Robert Chan Ang go to medical school?
Dr. Ang graduated from University of Santo Tomas in 1981.
What drugs does Dr. Robert Chan Ang prescribe most?
In 2016 Medicare Part D data, Dr. Ang's most prescribed drugs by claims were Advair Diskus and Amlodipine Besylate.
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Has Dr. Robert Chan Ang received payments from drug or device companies?
CMS Open Payments shows $1,453 in general payments to Dr. Ang from 9 companies from 2016 to 2023. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Robert Chan Ang been practicing?
Dr. Ang graduated from medical school in 1981, 45 years ago.
What insurance does Dr. Robert Chan Ang accept?
Dr. Ang is in network with 4 carriers, including Elevance, Blue Cross Blue Shield of Massachusetts and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
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