Dr. Alan Jacob Merin, MD
- Medicare services, 2024
- 200
- Medicare patients, 2024
- 39
- Part D claims, 2024
- 4,255
- Hospital affiliations
- 1
- Industry payments
- $4,452
- Practice address
- 215 N San Saba, Suite 201, San Antonio, TX 78207
- Practice phone
- Call (210) 212-8622
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Total Vascular Care
Surgery Center - Medicare-Certified · San Antonio, Texas
Find Dr. Merin'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. Alan Jacob Merin is a nephrologist in San Antonio, Texas
Dr. Merin practices at Total Vascular Care in San Antonio, Texas.
Dr. Merin's NPI, 1366440547, was assigned on July 12, 2005. Dr. Merin graduated from VCU School of Medicine in 1976. Dr. Merin holds Texas license F6041.
- NPI
- 1366440547NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8325223043
- NPI enumeration date
- July 12, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (210) 212-8622
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 76
- Medical school graduation
- 1976
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Alan Jacob Merin practices at Total Vascular Care in San Antonio, Texas
Dr. Merin's primary practice is Total Vascular Care, at 215 N San Saba, Suite 201, San Antonio, TX 78207. The practice phone is (210) 212-8622.
- Total Vascular Care215 N San Saba, Suite 201, San Antonio, TX 78207Phone(210) 212-8622
Source: Dmand AI Affiliation Data
Dr. Alan Jacob Merin is affiliated with 4 sites of care
Dr. Merin's primary practice is Total Vascular Care in San Antonio, Texas. Dr. Merin is also affiliated with Methodist Hospital. Dmand AI also links Dr. Merin to 1 more physician office and 1 hospice, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Alan Jacob Merin's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Merin practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Total Vascular Care | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Alan Jacob Merin is one of 1,045 nephrologists in Texas
Nephrology is Dr. Merin's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Merin is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Merin's licenses on file in 2 states: Texas and Ohio.
Specialties and state licenses
- Nephrology, TexasPrimary
- Ohio license
Clinical focus
Dmand AI lists chronic kidney disease among the conditions Dr. Merin treats.
Nephrologists near Dr. Merin
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. Alan Jacob Merin billed Medicare for 200 services in 2024
CMS data shows 200 Medicare services from Dr. Merin across 3 procedure codes in 2024, for 39 Medicare patients. Medicare paid $21,459 for them.
Dr. Merin's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1412024: 20042%
Where Dr. Merin's Medicare services took place, 2024
- In an office5226%
- In a facility14874%
Dr. Merin compared with the Texas median for nephrologists, 2024
- Dr. Merin
- Texas median
- Medicare services
- 200vs 1,04881% below
- Medicare patients
- 39vs 27786% below
- Part D claims
- 3,766vs 7585.0 times
Medians across 1,017 nephrologists in Texas with Dmand AI profiles that report each measure.
Dr. Merin'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.
Need commercial claims for Dr. Merin?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Merin and other nephrologists in Texas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Alan Jacob Merin treated 39 Medicare patients in 2024, average age 75
CMS counts 39 Medicare patients who saw Dr. Merin in 2024. The largest group is 75 to 84, with 15 patients. 75% of them have chronic kidney disease, and 75% have diabetes. Their average risk score is 2.96, 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. Merin's median patient age at 71, with 45% women.
Dr. Merin's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Merin's Medicare patients by sex, 2024
- Women1538%
- Men2462%
Chronic conditions among Dr. Merin's Medicare patients, 2024
- Chronic kidney disease75%
- Diabetes75%
- High blood pressure75%
- High cholesterol75%
- Arthritis67%
- Ischemic heart disease62%
- Atrial fibrillation44%
- Heart failure38%
Share of Medicare patients with each condition. A patient can have several.
Dr. Merin's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women45%
- Men55%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Alan Jacob Merin wrote 4,255 Medicare Part D claims in 2024
In 2024, Dr. Merin wrote 4,255 Medicare Part D claims for 179 patients. 72% of them were for generic drugs. CMS names the drug for 3,766 of them, across 81 drugs with 11 or more claims each, at $950,525 in total drug cost. In 2023, CMS named 3,047 claims across 74 drugs.
Dr. Merin's Part D claims by kind of drug, 2024
- Generic3,068 claims72%
- Brand-name1,176 claims28%
- Other11 claims0%
Dr. Merin'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. Merin's Part D claims, 2024
- Opioids1%30 of 4,255 claims
- Antibiotics2%100 of 4,255 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: 3,0472024: 3,76624%
Drugs named by CMS: 81 in 2024, 74 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. Alan Jacob Merin takes part in Medicare
Dr. Merin 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. Alan Jacob Merin received $4,452 in industry payments from 2016 to 2025
CMS Open Payments shows 282 general payments to Dr. Merin from 28 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. Eli Lilly and Company paid the most, $788.
General payments to Dr. Merin by program year, 2016 to 2025
General payments to Dr. Merin by kind, 2016 to 2025
- Food and beverage$4,39999%
- Education$521%
Companies that paid Dr. Merin 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. Alan Jacob Merin graduated from VCU School of Medicine
Dr. Merin graduated from VCU School of Medicine in 1976.
- Medical school
- Board certified in internal medicine
- Board certified in nephrology
Source: Dmand AI Professional Profile Data
Dr. Alan Jacob Merin accepts plans from 15 insurance carriers
Dr. Merin is in network with 15 carriers, including Aetna, Elevance and United Healthcare. HMO plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Aetna
- Elevance
- United Healthcare
- Blue Cross Blue Shield of Michigan
- Cigna
- Alliant Health Plans
- HCSC
- Baylor Scott and White
- +7 more carriersWith a free account
Plan types Dr. Merin accepts, by number of carriers
- HMO10
- PPO9
- Medicare5
- POS5
- EPO3
Source: Dmand AI Insurance Network Data
Sources for Dr. Alan Jacob Merin'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) |
| 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. Alan Jacob Merin
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. Alan Jacob Merin's NPI number?
Dr. Alan Jacob Merin's NPI number is 1366440547. It was assigned on July 12, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Alan Jacob Merin?
Dr. Alan Jacob Merin is a nephrologist in San Antonio, Texas. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Alan Jacob Merin practice?
Dr. Merin practices at 215 N San Saba, Suite 201, San Antonio, TX 78207. Dr. Merin's primary practice is Total Vascular Care in San Antonio, Texas. Dmand AI also links Dr. Merin to 1 physician office and 1 hospice.
What is Dr. Alan Jacob Merin's office phone number?
The practice phone on file for Dr. Merin is (210) 212-8622.
What is Dr. Alan Jacob Merin's medical license number?
Dr. Merin holds Texas license F6041, one of the licenses on file in 2 states.
Which states has Dr. Alan Jacob Merin been licensed in?
Dmand AI has state licenses on file for Dr. Merin in Texas (1979 to 2027) and Ohio (1978 to 1982).
Which hospitals is Dr. Alan Jacob Merin affiliated with?
Dr. Merin is affiliated with Methodist Hospital.
Does Dr. Alan Jacob Merin accept Medicare?
Yes. CMS data shows Dr. Merin billed Medicare for 200 services in 2024, and Dr. Merin accepts Medicare assignment.
How many Medicare patients does Dr. Alan Jacob Merin see?
CMS counts 39 Medicare patients who saw Dr. Merin in 2024, with an average age of 75.
Is Dr. Alan Jacob Merin board certified?
Yes. Dr. Merin is board certified in internal medicine by the American Board of Internal Medicine.
Show 6 more questionsShow fewer questions
What services does Dr. Alan Jacob Merin bill to Medicare?
In 2024, Dr. Merin's most billed Medicare services were hospital inpatient care (99233), office visit, established patient (99215) and hospital inpatient care (99223).
Where did Dr. Alan Jacob Merin go to medical school?
Dr. Merin graduated from VCU School of Medicine in 1976.
What drugs does Dr. Alan Jacob Merin prescribe most?
In 2024 Medicare Part D data, Dr. Merin's most prescribed drugs by claims were Jardiance, Atorvastatin Calcium and Losartan Potassium.
Has Dr. Alan Jacob Merin received payments from drug or device companies?
CMS Open Payments shows $4,452 in general payments to Dr. Merin from 28 companies from 2016 to 2025. The largest total came from Eli Lilly and Company.
How long has Dr. Alan Jacob Merin been practicing?
Dr. Merin graduated from medical school in 1976, 50 years ago.
What insurance does Dr. Alan Jacob Merin accept?
Dr. Merin is in network with 15 carriers, including Aetna, Elevance and United Healthcare. HMO plans come from the most carriers, 10. Check the plan with the practice before a visit.
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