Dr. Kelvin Nolan Kay, MD
- Medicare services, 2024
- 74
- Medicare patients, 2024
- 35
- Part D claims, 2024
- 277
- Hospital affiliations
- 2
- Medical group
- 1
- Practice address
- 1 Quality Drive, Vacaville, CA 95688
- Practice phone
- Call (707) 624-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Kay's professional email, personal email and mobile number
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Dr. Kelvin Nolan Kay is an internist in Vacaville, California
Dr. Kay practices at Vacaville Medical Center in Vacaville, California, part of Kaiser Permanente.
Dr. Kay's NPI, 1588778542, was assigned on August 18, 2006. Dr. Kay graduated from Feinberg School of Medicine in 2001. Dr. Kay holds Oregon license MD25898.
- NPI
- 1588778542NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7214908995
- NPI enumeration date
- August 18, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (707) 624-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Kelvin Nolan Kay practices at Vacaville Medical Center in Vacaville, California
Dr. Kay's primary practice is Vacaville Medical Center, at 1 Quality Drive, Vacaville, CA 95688 in Solano County. The practice phone is (707) 624-4000.
- Vacaville Medical Center1 Quality Drive, Vacaville, CA 95688 · Solano CountyPhone(707) 624-4000
Source: Dmand AI Affiliation Data
Dr. Kelvin Nolan Kay is affiliated with 3 sites of care and 1 medical group
Dr. Kay's primary practice is Vacaville Medical Center in Vacaville, California, part of Kaiser Permanente. Dr. Kay is also affiliated with Vallejo Medical Center. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Kay to 1 more clinical lab, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Kelvin Nolan Kay's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kay practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Vacaville Medical 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. Kelvin Nolan Kay is one of 16,751 internists in California
Internal medicine is Dr. Kay's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Kay is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Kay's licenses on file in 2 states: Oregon and California.
Specialties and state licenses
- Internal medicine, OregonPrimary
- California license
Clinical focus
Dmand AI lists pneumonia and respiratory infection, seizures and stroke among the conditions Dr. Kay treats.
Internists near Dr. Kay
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. Kelvin Nolan Kay billed Medicare for 74 services in 2024
CMS data shows 74 Medicare services from Dr. Kay across 3 procedure codes in 2024, for 35 Medicare patients. Medicare paid $5,223 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Kay's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 252024: 74196%
Dr. Kay compared with the California median for internists, 2024
- Dr. Kay
- California median
- Medicare services
- 74vs 36180% below
- Medicare patients
- 35vs 15177% below
- Part D claims
- 105vs 42175% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Kay'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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Kelvin Nolan Kay treated 35 Medicare patients in 2024, average age 73
CMS counts 35 Medicare patients who saw Dr. Kay in 2024. The largest group is 75 to 84, with 12 patients. 75% of them have high blood pressure, and 69% have high cholesterol. 40% are also on Medicaid. Their average risk score is 2.66, 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. Kay's median patient age at 72, with 53% women.
Dr. Kay's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Kay's Medicare patients by sex, 2024
- Women1646%
- Men1954%
Chronic conditions among Dr. Kay's Medicare patients, 2024
- High blood pressure75%
- High cholesterol69%
- Diabetes66%
- Chronic kidney disease60%
- Heart failure49%
- Mood disorders46%
- Atrial fibrillation40%
- Depression40%
Share of Medicare patients with each condition. A patient can have several.
Dr. Kay's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women53%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Kelvin Nolan Kay wrote 277 Medicare Part D claims in 2024
In 2024, Dr. Kay wrote 277 Medicare Part D claims for 123 patients. 84% of them were for generic drugs. CMS names the drug for 105 of them, across 7 drugs with 11 or more claims each, at $2,324 in total drug cost. In 2023, CMS named 71 claims across 4 drugs.
Dr. Kay's Part D claims by kind of drug, 2024
- Generic232 claims84%
- Brand-name and other45 claims16%
Dr. Kay'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. Kay's Part D claims, 2024
- Antibiotics23%64 of 277 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: 712024: 10548%
Drugs named by CMS: 7 in 2024, 4 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. Kelvin Nolan Kay takes part in Medicare
Dr. Kay 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. Kelvin Nolan Kay graduated from Feinberg School of Medicine
Dr. Kay graduated from Feinberg School of Medicine in 2001.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Kelvin Nolan Kay accepts plans from 2 insurance carriers
Dr. Kay 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. Kay accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Kelvin Nolan Kay'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 Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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) |
| 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. Kelvin Nolan Kay
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. Kelvin Nolan Kay's NPI number?
Dr. Kelvin Nolan Kay's NPI number is 1588778542. It was assigned on August 18, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Kelvin Nolan Kay?
Dr. Kelvin Nolan Kay is an internist in Vacaville, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Kelvin Nolan Kay practice?
Dr. Kay practices at 1 Quality Drive, Vacaville, CA 95688. Dr. Kay's primary practice is Vacaville Medical Center in Vacaville, California, part of Kaiser Permanente. Dmand AI also links Dr. Kay to 1 clinical lab.
What is Dr. Kelvin Nolan Kay's office phone number?
The practice phone on file for Dr. Kay is (707) 624-4000.
What is Dr. Kelvin Nolan Kay's medical license number?
Dr. Kay holds Oregon license MD25898, one of the licenses on file in 2 states.
Which states has Dr. Kelvin Nolan Kay been licensed in?
Dmand AI has state licenses on file for Dr. Kay in Oregon (since 2005) and California (2003 to 2026).
Which hospitals is Dr. Kelvin Nolan Kay affiliated with?
Dr. Kay practices at Vacaville Medical Center in Vacaville, California. Dr. Kay is also affiliated with Vallejo Medical Center.
What medical group is Dr. Kelvin Nolan Kay part of?
Dr. Kay is linked to The Permanente Medical Group, Inc.
Does Dr. Kelvin Nolan Kay accept Medicare?
Yes. CMS data shows Dr. Kay billed Medicare for 74 services in 2024, and Dr. Kay accepts Medicare assignment.
How many Medicare patients does Dr. Kelvin Nolan Kay see?
CMS counts 35 Medicare patients who saw Dr. Kay in 2024, with an average age of 73.
Show 6 more questionsShow fewer questions
Is Dr. Kelvin Nolan Kay board certified?
Yes. Dr. Kay is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Kelvin Nolan Kay bill to Medicare?
In 2024, Dr. Kay's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99222) and hospital inpatient care (99238).
Where did Dr. Kelvin Nolan Kay go to medical school?
Dr. Kay graduated from Feinberg School of Medicine in 2001.
What drugs does Dr. Kelvin Nolan Kay prescribe most?
In 2024 Medicare Part D data, Dr. Kay's most prescribed drugs by claims were Cefpodoxime Proxetil, Atorvastatin Calcium and Furosemide.
How long has Dr. Kelvin Nolan Kay been practicing?
Dr. Kay graduated from medical school in 2001, 25 years ago.
What insurance does Dr. Kelvin Nolan Kay accept?
Dr. Kay 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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