Abdominal AbscessAdjuvants, ImmunologicAnastomosis, Surgical
Dr. Grace S. Tay, MD
NPI1184702094PAC ID9537125562
- Medicare patients, 2024
- 11
- Part D claims, 2024
- 97
- Publications
- 2
- Industry payments
- $365
- Affiliated sites
- 1
- Practice address
- 1190 Veterans Blvd, Redwood City, CA 94063
- Practice phone
- Call (650) 299-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Permanente Medical Group Inc
Redwood City, California
Find Dr. Tay'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. Grace S. Tay is a general surgeon in Redwood City, California
Dr. Tay practices at Permanente Medical Group Inc in Redwood City, California.
Dr. Tay's NPI, 1184702094, was assigned on November 1, 2006. Dr. Tay graduated from Medical College Of Wisconsin in 1999. Dr. Tay holds California license A88470.
NPI and contact details
- NPI
- 1184702094NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9537125562
- NPI enumeration date
- November 1, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (650) 299-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Grace S. Tay practices at Permanente Medical Group Inc in Redwood City, California
Dr. Tay's primary practice is Permanente Medical Group Inc, at 1190 Veterans Blvd, Redwood City, CA 94063 in San Mateo County. The practice phone is (650) 299-2000.
- Permanente Medical Group Inc1190 Veterans Blvd, Redwood City, CA 94063 · San Mateo CountyPhone(650) 299-2000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Grace S. Tay is affiliated with 2 sites of care and 1 medical group
Dr. Tay's primary practice is Permanente Medical Group Inc in Redwood City, California. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Tay to 1 more group practice or clinic, named with a free account.
Permanente Medical Group IncPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Grace S. Tay's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tay practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Permanente Medical Group Inc | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Grace S. Tay is one of 2,926 general surgeons in California
Surgery is Dr. Tay's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Tay is board certified in surgery by the American Board of Surgery. Dmand AI has Dr. Tay's licenses on file in 2 states: California and Wisconsin.
Specialties and state licenses
- Surgery, CaliforniaPrimary
- Wisconsin license
General surgeons near Dr. Tay
Counts of general surgeons 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. Grace S. Tay treated 11 Medicare patients in 2024, average age 65
CMS counts 11 Medicare patients who saw Dr. Tay in 2024. Their average risk score is 2.38, 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. Tay's median patient age at 59, with 48% women.
Medicare patients, 202411
Average age65
Average risk score2.38
Dr. Tay's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women48%
- Men52%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Grace S. Tay wrote 97 Medicare Part D claims in 2024
In 2024, Dr. Tay wrote 97 Medicare Part D claims for 55 patients. 99% of them were for generic drugs. CMS names the drug for 68 of them, across 2 drugs with 11 or more claims each, at $495 in total drug cost. In 2023, CMS named 56 claims across 2 drugs.
Part D claims, 202497
Drugs named by CMS2
Total drug cost$495
Part D patients55
Dr. Tay's Part D claims by kind of drug, 2024
- Generic96 claims99%
- Brand-name and other1 claims1%
Dr. Tay'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. Tay's Part D claims, 2024
- Opioids49%48 of 97 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: 562024: 6821%
Drugs named by CMS: 2 in 2024, 2 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
How Dr. Grace S. Tay takes part in Medicare
Dr. Tay accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Grace S. Tay has 2 publications on record
Dmand AI links 2 papers to Dr. Tay. Dr. Tay's most frequent co-author is David G. Binion, MD.
Papers2
Dr. Tay's most frequent co-authors
Recent publications by Dr. Tay
See who Dr. Tay researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Tay works with, so you can find a warm path to the right general surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Grace S. Tay received $365 in industry payments in 2016
CMS Open Payments shows 2 general payments to Dr. Tay from 1 drug or device company in 2016. Travel and lodging make up the largest share, 78% of the total. Covidien Sales LLC paid the most, $365.
General payments to Dr. Tay by kind, 2016 to 2016
$365in total
- Travel and lodging$28678%
- Food and beverage$7922%
Companies that paid Dr. Tay the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Grace S. Tay has 1 award and honors on record
Dmand AI lists 1 award for Dr. Tay.
Awards and honors for Dr. Tay
- Undated
- ACS Fellow
Source: Dmand AI Professional Profile Data
Dr. Grace S. Tay graduated from Medical College Of Wisconsin
Dr. Tay graduated from Medical College Of Wisconsin in 1999. Dr. Tay is a member of Americal College of Lifestyle Medicine and ACS.
- Medical school
- Board certified in surgery
- Board certified in diplomate
Source: Dmand AI Professional Profile Data
Dr. Grace S. Tay accepts plans from 2 insurance carriers
Dr. Tay is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Tay accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Grace S. Tay'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 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) |
| 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. Grace S. Tay
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. Grace S. Tay's NPI number?
Dr. Grace S. Tay's NPI number is 1184702094. It was assigned on November 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Grace S. Tay?
Dr. Grace S. Tay is a general surgeon in Redwood City, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Grace S. Tay practice?
Dr. Tay practices at 1190 Veterans Blvd, Redwood City, CA 94063. Dr. Tay's primary practice is Permanente Medical Group Inc in Redwood City, California. Dmand AI also links Dr. Tay to 1 group practice or clinic.
What is Dr. Grace S. Tay's office phone number?
The practice phone on file for Dr. Tay is (650) 299-2000.
What is Dr. Grace S. Tay's medical license number?
Dr. Tay holds California license A88470, one of the licenses on file in 2 states.
Which states has Dr. Grace S. Tay been licensed in?
Dmand AI has state licenses on file for Dr. Tay in California (2004 to 2026) and Wisconsin (2000 to 2005).
What medical group is Dr. Grace S. Tay part of?
Dr. Tay is linked to The Permanente Medical Group, Inc.
Does Dr. Grace S. Tay accept Medicare?
Yes. CMS lists Dr. Tay as accepting Medicare assignment.
How many Medicare patients does Dr. Grace S. Tay see?
CMS counts 11 Medicare patients who saw Dr. Tay in 2024, with an average age of 65.
Is Dr. Grace S. Tay board certified?
Yes. Dr. Tay is board certified in surgery by the American Board of Surgery.
Show 7 more questionsShow fewer questions
Where did Dr. Grace S. Tay go to medical school?
Dr. Tay graduated from Medical College Of Wisconsin in 1999.
What drugs does Dr. Grace S. Tay prescribe most?
In 2024 Medicare Part D data, Dr. Tay's most prescribed drugs by claims were Oxycodone HCl and Ibuprofen.
Has Dr. Grace S. Tay received payments from drug or device companies?
CMS Open Payments shows $365 in general payments to Dr. Tay from 1 company from 2016 to 2016. The largest total came from Covidien Sales LLC.
How long has Dr. Grace S. Tay been practicing?
Dr. Tay graduated from medical school in 1999, 27 years ago.
Does Dr. Grace S. Tay do research?
Dmand AI links 2 publications to Dr. Tay.
Who does Dr. Grace S. Tay publish with?
Dr. Tay's most frequent co-authors are David G. Binion, MD (1 shared paper).
What insurance does Dr. Grace S. Tay accept?
Dr. Tay is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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