Dr. Ranjan Ray, MD, PhD
- Medicare services, 2024
- 1,800
- Medicare patients, 2024
- 369
- Part D claims, 2024
- 1,697
- Publications
- 12
- Clinical trials
- 2
- Practice address
- 2333 Buchanan St, San Francisco, CA 94115
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
California Pacific Medical Center - B.H. Cancer Care Center-Buchanan St - HOPD
Acute Care Hospital outpatient department · San Francisco, California
Find Dr. Ray'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. Ranjan Ray is an advanced heart failure and transplant cardiology physician in San Francisco, California
Dr. Ray practices at California Pacific Medical Center - B.H. Cancer Care Center-Buchanan St - HOPD in San Francisco, California.
Dr. Ray's NPI, 1033376017, was assigned on May 19, 2008. Dr. Ray graduated from Georgetown University School Of Medicine in 2006. Dr. Ray holds California license A108532.
- NPI
- 1033376017NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9335385277
- NPI enumeration date
- May 19, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 46
- Medical school graduation
- 2006
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ranjan Ray practices at California Pacific Medical Center - B.H. Cancer Care Center-Buchanan St - HOPD in San Francisco, California
Dr. Ray's primary practice is California Pacific Medical Center - B.H. Cancer Care Center-Buchanan St - HOPD, at 2333 Buchanan St, San Francisco, CA 94115.
- California Pacific Medical Center - B.H. Cancer Care Center-Buchanan St - HOPD2333 Buchanan St, San Francisco, CA 94115
Source: Dmand AI Affiliation Data
Dr. Ranjan Ray is affiliated with 7 sites of care and 1 medical group
Dr. Ray's primary practice is California Pacific Medical Center - B.H. Cancer Care Center-Buchanan St - HOPD in San Francisco, California. Dr. Ray is also affiliated with California Pacific Medical Center Van Ness Campus. The medical group on file is Palo Alto Foundation Medical Group. Dmand AI also links Dr. Ray to 4 more hospitals and 1 group practice or clinic, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Ranjan Ray's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ray practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| California Pacific Medical Center - B.H. Cancer Care Center-Buchanan St - HOPD | Available with a free account |
| +6 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ranjan Ray is one of 109 advanced heart failures and transplant cardiology physicians in California
Advanced heart failure and transplant cardiology is Dr. Ray's primary specialty in the NPI Registry, under taxonomy code 207RA0001X. Dr. Ray is board certified in advanced heart failure and transplant cardiology by the American Board of Internal Medicine. Dmand AI has Dr. Ray's licenses on file in 2 states: California and Massachusetts.
Specialties and state licenses
- Advanced heart failure and transplant cardiology, CaliforniaPrimary
- Internal medicine, Massachusetts
Clinical focus
Dmand AI lists cardiomyopathy and heart failure among the conditions Dr. Ray treats.
Advanced heart failures and transplant cardiology physicians near Dr. Ray
Counts of advanced heart failures and transplant cardiology 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. Ranjan Ray billed Medicare for 1,800 services in 2024
CMS data shows 1,800 Medicare services from Dr. Ray across 11 procedure codes in 2024, for 369 Medicare patients. Medicare paid $191,243 for them.
Dr. Ray's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,0132024: 1,17516%
- Tests and treatments
- 2023: 5362024: 61415%
- Imaging
- 2023: 172024: 1135%
Where Dr. Ray's Medicare services took place, 2024
- In an office38221%
- In a facility1,41879%
Dr. Ray compared with the California median for advanced heart failures and transplant cardiology physicians, 2024
- Dr. Ray
- California median
- Medicare services
- 1,800vs 1,13658% above
- Medicare patients
- 369vs 48925% below
- Part D claims
- 1,472vs 1,509Close to median
Medians across 106 advanced heart failures and transplant cardiology physicians in California with Dmand AI profiles that report each measure.
Dr. Ray'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ray and other advanced heart failures and transplant cardiology physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ranjan Ray treated 369 Medicare patients in 2024, average age 74
CMS counts 369 Medicare patients who saw Dr. Ray in 2024. The largest group is 65 to 74, with 166 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 20% are also on Medicaid. Their average risk score is 1.91, 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. Ray's median patient age at 65, with 38% women.
Dr. Ray's Medicare patients by age, 2024
Dr. Ray's Medicare patients by sex, 2024
- Women16144%
- Men20856%
Chronic conditions among Dr. Ray's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Heart failure51%
- Ischemic heart disease44%
- Arthritis42%
- Chronic kidney disease42%
- Atrial fibrillation37%
- Diabetes31%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ray's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women38%
- Men58%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ranjan Ray wrote 1,697 Medicare Part D claims in 2024
In 2024, Dr. Ray wrote 1,697 Medicare Part D claims for 222 patients. 79% of them were for generic drugs. CMS names the drug for 1,472 of them, across 31 drugs with 11 or more claims each, at $1,335,650 in total drug cost. In 2023, CMS named 1,358 claims across 30 drugs.
Dr. Ray's Part D claims by kind of drug, 2024
- Generic1,337 claims79%
- Brand-name360 claims21%
Dr. Ray'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. Ray's Part D claims, 2024
- Antibiotics1%18 of 1,697 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: 1,3582024: 1,4728%
Drugs named by CMS: 31 in 2024, 30 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. Ranjan Ray offers telehealth to Medicare patients
Dr. Ray accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Ray as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Ranjan Ray has 12 publications on record
Dmand AI links 12 papers to Dr. Ray, published from 2007 to 2021. 2021 was the busiest year, with 2. The most frequent topics are India, Rural Population and Socioeconomic Factors. Dr. Ray has published most often in J Biosoc Sci. Dr. Ray's most frequent co-authors are Everett Lai, Dipanjan Banerjee, MD and Biykem Bozkurt, MD.
Dr. Ray's papers by year, 2007 to 2021
Topics Dr. Ray writes about most
- India
- Rural Population
- Socioeconomic Factors
- Health Surveys
- HIV Infections
- Poverty
- Urban Population
Dr. Ray's most frequent co-authors
Recent publications by Dr. Ray
Circ Heart Fail
See who Dr. Ray researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Ray works with, so you can find a warm path to the right advanced heart failures and transplant cardiology physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ranjan Ray has worked on 2 clinical trials
Dmand AI links Dr. Ray to 2 clinical trials. 1 is still active or recruiting. Conditions studied include Heart Failure and Heart Diseases.
Conditions in Dr. Ray's trials
- Heart Failure
- Heart Diseases
Investigators on the most trials with Dr. Ray
- Mirnela P. Byku, MD2 shared trials
- Jared James Herr, MD2 shared trials
- Eileen Michelle Hsich, MD2 shared trials
Recent clinical trials with Dr. Ray
Surveillance HeartCare® Outcomes Registry (opens in a new tab)
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Ranjan Ray received $6,488 in industry payments from 2016 to 2025
CMS Open Payments shows 133 general payments to Dr. Ray from 25 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 72% of the total. Abbott Laboratories paid the most, $2,105.
General payments to Dr. Ray by program year, 2016 to 2025
General payments to Dr. Ray by kind, 2016 to 2025
- Food and beverage$4,64372%
- Travel and lodging$1,82028%
- Speaker and faculty fees$240%
Companies that paid Dr. Ray the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ranjan Ray graduated from Georgetown University School Of Medicine
Dr. Ray graduated from Georgetown University School Of Medicine in 2006.
- Medical school
- Board certified in advanced heart failure and transplant cardiology
- Board certified in cardiovascular disease
Source: Dmand AI Professional Profile Data
Dr. Ranjan Ray accepts plans from 13 insurance carriers
Dr. Ray is in network with 13 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Alliant Health Plans
- +5 more carriersWith a free account
Plan types Dr. Ray accepts, by number of carriers
- PPO9
- Medicare7
- HMO6
- EPO4
- POS3
Source: Dmand AI Insurance Network Data
Sources for Dr. Ranjan Ray'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 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 |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| 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. Ranjan Ray
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. Ranjan Ray's NPI number?
Dr. Ranjan Ray's NPI number is 1033376017. It was assigned on May 19, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Ranjan Ray?
Dr. Ranjan Ray is an advanced heart failure and transplant cardiology physician in San Francisco, California. The primary specialty in the NPI Registry is Advanced Heart Failure and Transplant Cardiology Physician (taxonomy code 207RA0001X).
Where does Dr. Ranjan Ray practice?
Dr. Ray practices at 2333 Buchanan St, San Francisco, CA 94115. Dr. Ray's primary practice is California Pacific Medical Center - B.H. Cancer Care Center-Buchanan St - HOPD in San Francisco, California. Dmand AI also links Dr. Ray to 4 hospitals and 1 group practice or clinic.
What is Dr. Ranjan Ray's medical license number?
Dr. Ray holds California license A108532, one of the licenses on file in 2 states.
Which states has Dr. Ranjan Ray been licensed in?
Dmand AI has state licenses on file for Dr. Ray in California (2009 to 2027) and Massachusetts.
Which hospitals is Dr. Ranjan Ray affiliated with?
Dr. Ray is affiliated with California Pacific Medical Center Van Ness Campus. Dmand AI links Dr. Ray to 4 more hospitals.
What medical group is Dr. Ranjan Ray part of?
Dr. Ray is linked to Palo Alto Foundation Medical Group.
Does Dr. Ranjan Ray accept Medicare?
Yes. CMS data shows Dr. Ray billed Medicare for 1,800 services in 2024, and Dr. Ray accepts Medicare assignment.
Does Dr. Ranjan Ray offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Ray as offering telehealth services.
How many Medicare patients does Dr. Ranjan Ray see?
CMS counts 369 Medicare patients who saw Dr. Ray in 2024, with an average age of 74.
Show 9 more questionsShow fewer questions
Is Dr. Ranjan Ray board certified?
Yes. Dr. Ray is board certified in advanced heart failure and transplant cardiology by the American Board of Internal Medicine.
What services does Dr. Ranjan Ray bill to Medicare?
In 2024, Dr. Ray's most billed Medicare services were critical care (99291), heart test or procedure (93750) and hospital inpatient care (99233).
Where did Dr. Ranjan Ray go to medical school?
Dr. Ray graduated from Georgetown University School Of Medicine in 2006.
What drugs does Dr. Ranjan Ray prescribe most?
In 2024 Medicare Part D data, Dr. Ray's most prescribed drugs by claims were Losartan Potassium, Atorvastatin Calcium and Amlodipine Besylate.
Has Dr. Ranjan Ray received payments from drug or device companies?
CMS Open Payments shows $6,488 in general payments to Dr. Ray from 25 companies from 2016 to 2025. The largest total came from Abbott Laboratories.
How long has Dr. Ranjan Ray been practicing?
Dr. Ray graduated from medical school in 2006, 20 years ago.
Does Dr. Ranjan Ray do research?
Dmand AI links 12 publications to Dr. Ray, published from 2007 to 2021. Dr. Ray has worked on 2 clinical trials.
Who does Dr. Ranjan Ray publish with?
Dr. Ray's most frequent co-authors are Everett Lai (2 shared papers), Dipanjan Banerjee, MD (1 shared paper) and Biykem Bozkurt, MD (1 shared paper).
What insurance does Dr. Ranjan Ray accept?
Dr. Ray is in network with 13 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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