Dr. Leena S. Ray, MD
- Medicare services, 2018
- 198
- Part D claims, 2024
- 103
- Hospital affiliations
- 1
- Industry payments
- $15
- Medical groups
- 2
- Practice address
- 2500 Alhambra Avenue, Martinez, CA 94553
- Practice phone
- Call (925) 370-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Leena S. Ray is a nephrologist in Martinez, California
Dr. Ray practices at Contra Costa Regional Medical Center in Martinez, California, part of State of California.
Dr. Ray's NPI, 1679574693, was assigned on August 2, 2005. Dr. Ray graduated from Albert Einstein College of Medicine in 1999. Dr. Ray's California license number on file is A84526.
- NPI
- 1679574693NPI Registry (opens in a new tab)
- NPI enumeration date
- August 2, 2005
- NPI status
- Active
- Practice phone
- (925) 370-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Leena S. Ray practices at Contra Costa Regional Medical Center in Martinez, California
Dr. Ray's primary practice is Contra Costa Regional Medical Center, at 2500 Alhambra Avenue, Martinez, CA 94553 in Contra Costa County. The practice phone is (925) 370-5000.
- Contra Costa Regional Medical Center2500 Alhambra Avenue, Martinez, CA 94553 · Contra Costa CountyPhone(925) 370-5000
Source: Dmand AI Affiliation Data
Dr. Leena S. Ray is affiliated with 3 sites of care and 2 medical groups
Dr. Ray's primary practice is Contra Costa Regional Medical Center in Martinez, California, part of State of California. The medical group on file is West County Adult Mental Health Services. Dmand AI also links Dr. Ray to 2 more group practices and clinics and 1 medical group, each named with a free account. Dr. Ray's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Leena S. Ray's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ray practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Contra Costa Regional Medical Center | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Leena S. Ray is one of 1,401 nephrologists in California
Nephrology is Dr. Ray's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Ray is board certified in internal medicine by the American Board of Internal Medicine. Dr. Ray has a license on file in California.
Specialties and state licenses
- Nephrology, CaliforniaPrimary
Nephrologists near Dr. Ray
Counts of nephrologists 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. Leena S. Ray billed Medicare for 198 services in 2018
CMS data shows 198 Medicare services from Dr. Ray across 7 procedure codes in 2018. Medicare paid $16,735 for them.
Dr. Ray's Medicare services by type, 2017 to 2018
- 2017
- 2018
- Office and hospital visits
- 2017: 9832018: 14585%
- Tests and treatments
- 2017: 6762018: 5392%
- Lab and pathology
- 2017: 122018: 0100%
Where Dr. Ray's Medicare services took place, 2018
- In an office9045%
- In a facility10855%
Dr. Ray compared with the California median for nephrologists, 2018
- Dr. Ray
- California median
- Medicare services
- 198vs 1,08482% below
- Part D claims
- 54vs 95594% below
Medians across 1,355 nephrologists in California with Dmand AI profiles that report each measure.
Dr. Ray's most billed Medicare procedure codes, 2018
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 nephrologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Leena S. Ray's patients have a median age of 73
Across all payers, Dmand AI patient panel data puts Dr. Ray's median patient age at 73, with 53% women.
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 73
Patient panel by sex, all payers
- Women53%
- Men47%
Source: Dmand AI Patient Panel Data
Dr. Leena S. Ray wrote 103 Medicare Part D claims in 2024
In 2024, Dr. Ray wrote 103 Medicare Part D claims for 29 patients. 98% of them were for generic drugs. CMS names the drug for 54 of them, across 3 drugs with 11 or more claims each, at $287 in total drug cost. In 2018, CMS named 248 claims across 12 drugs.
Dr. Ray's Part D claims by kind of drug, 2024
- Generic101 claims98%
- Brand-name and other2 claims2%
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.
Part D claims for drugs CMS names, 2018 to 2024
- 2018
- 2024
- Claims for drugs CMS names
- 2018: 2482024: 5478%
Drugs named by CMS: 3 in 2024, 12 in 2018.
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
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Dr. Leena S. Ray received $15 in industry payments from 2016 to 2017
CMS Open Payments shows 2 general payments to Dr. Ray from 2 drug and device companies from 2016 to 2017. Food and beverage make up the largest share, 92% of the total. Relypsa, Inc. paid the most, $14.
General payments to Dr. Ray by program year, 2016 to 2017
General payments to Dr. Ray by kind, 2016 to 2017
- Food and beverage$1492%
- Education$18%
Companies that paid Dr. Ray the most, 2016 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Leena S. Ray graduated from Albert Einstein College of Medicine
Dr. Ray graduated from Albert Einstein College of Medicine in 1999.
- Medical school
- Board certified in internal medicine
- Board certified in nephrology
Source: Dmand AI Professional Profile Data
Sources for Dr. Leena S. 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 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 Data |
| 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. Leena S. 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. Leena S. Ray's NPI number?
Dr. Leena S. Ray's NPI number is 1679574693. It was assigned on August 2, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Leena S. Ray?
Dr. Leena S. Ray is a nephrologist in Martinez, California. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Leena S. Ray practice?
Dr. Ray practices at 2500 Alhambra Avenue, Martinez, CA 94553. Dr. Ray's primary practice is Contra Costa Regional Medical Center in Martinez, California, part of State of California. Dmand AI also links Dr. Ray to 2 group practices and clinics and 1 medical group.
What is Dr. Leena S. Ray's office phone number?
The practice phone on file for Dr. Ray is (925) 370-5000.
What is Dr. Leena S. Ray's medical license number?
Dr. Ray's California license number on file is A84526.
Which hospitals is Dr. Leena S. Ray affiliated with?
Dr. Ray practices at Contra Costa Regional Medical Center in Martinez, California.
What medical group is Dr. Leena S. Ray part of?
Dr. Ray is linked to West County Adult Mental Health Services. Dmand AI links Dr. Ray to 1 more medical group.
Does Dr. Leena S. Ray accept Medicare?
Yes. CMS data shows Dr. Ray billed Medicare for 198 services in 2018.
Is Dr. Leena S. Ray board certified?
Yes. Dr. Ray is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Leena S. Ray bill to Medicare?
In 2018, Dr. Ray's most billed Medicare services were hospital inpatient care (99232), office visit, established patient (99213) and dialysis (90960).
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Where did Dr. Leena S. Ray go to medical school?
Dr. Ray graduated from Albert Einstein College of Medicine in 1999.
What drugs does Dr. Leena S. Ray prescribe most?
In 2024 Medicare Part D data, Dr. Ray's most prescribed drugs by claims were Amlodipine Besylate, Losartan Potassium and Lisinopril.
Has Dr. Leena S. Ray received payments from drug or device companies?
CMS Open Payments shows $15 in general payments to Dr. Ray from 2 companies from 2016 to 2017. The largest total came from Relypsa, Inc.
How long has Dr. Leena S. Ray been practicing?
Dr. Ray graduated from medical school in 1999, 27 years ago.
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