Dr. Ruben J. Crespo-Diaz, MD
- Medicare services, 2024
- 470
- Medicare patients, 2024
- 215
- Part D claims, 2024
- 1,303
- Publications
- 27
- Hospital affiliations
- 5
- Practice address
- 1216 Second Street Southwest, Rochester, MN 55902
- Practice phone
- Call (507) 255-5123
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Crespo-Diaz'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. Ruben J. Crespo-Diaz is a cardiologist in Rochester, Minnesota
Dr. Crespo-Diaz practices at Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota, part of Mayo Clinic.
Dr. Crespo-Diaz's NPI, 1477908804, was assigned on May 4, 2016. Dr. Crespo-Diaz graduated from University of Puerto Rico School of Medicine in 2016. Dr. Crespo-Diaz holds Minnesota license 64459.
- NPI
- 1477908804NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8022355882
- NPI enumeration date
- May 4, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (507) 255-5123
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ruben J. Crespo-Diaz practices at Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota
Dr. Crespo-Diaz's primary practice is Mayo Clinic Hospital, Saint Marys Campus, at 1216 Second Street Southwest, Rochester, MN 55902 in Olmsted County. The practice phone is (507) 255-5123.
- Mayo Clinic Hospital, Saint Marys Campus1216 Second Street Southwest, Rochester, MN 55902 · Olmsted CountyPhone(507) 255-5123
Source: Dmand AI Affiliation Data
Dr. Ruben J. Crespo-Diaz is affiliated with 8 sites of care and 4 medical groups
Dr. Crespo-Diaz's primary practice is Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota, part of Mayo Clinic. Dr. Crespo-Diaz is also affiliated with Mayo Clinic Health System in Mankato. The medical group on file is Mayo Clinic. Dmand AI also links Dr. Crespo-Diaz to 3 more hospitals, 3 medical groups, 2 group practices and clinics 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. Ruben J. Crespo-Diaz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Crespo-Diaz practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mayo Clinic Hospital, Saint Marys Campus | Available with a free account |
| +7 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ruben J. Crespo-Diaz is one of 540 cardiologists in Minnesota
Cardiovascular disease is Dr. Crespo-Diaz's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dr. Crespo-Diaz is licensed in Minnesota.
Specialties and state licenses
- Cardiovascular disease, MinnesotaPrimary
Clinical focus
Dmand AI lists atrial fibrillation and flutter, cardiomyopathy, coronary artery disease, heart failure and lymphedema among the conditions Dr. Crespo-Diaz treats.
Cardiologists near Dr. Crespo-Diaz
Counts of cardiologists 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. Ruben J. Crespo-Diaz billed Medicare for 470 services in 2024
CMS data shows 470 Medicare services from Dr. Crespo-Diaz across 8 procedure codes in 2024, for 215 Medicare patients. Medicare paid $45,946 for them.
Dr. Crespo-Diaz's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 772024: 336336%
- Other services
- 2023: 02024: 134
Where Dr. Crespo-Diaz's Medicare services took place, 2024
- In an office27258%
- In a facility19842%
Dr. Crespo-Diaz compared with the Minnesota median for cardiologists, 2024
- Dr. Crespo-Diaz
- Minnesota median
- Medicare services
- 470vs 73336% below
- Medicare patients
- 215vs 48055% below
- Part D claims
- 1,127vs 4682.4 times
Medians across 521 cardiologists in Minnesota with Dmand AI profiles that report each measure.
Dr. Crespo-Diaz'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. Crespo-Diaz and other cardiologists in Minnesota.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ruben J. Crespo-Diaz treated 215 Medicare patients in 2024, average age 69
CMS counts 215 Medicare patients who saw Dr. Crespo-Diaz in 2024. The largest group is 65 to 74, with 95 patients. 75% of them have heart failure, and 75% have high blood pressure. 16% are also on Medicaid. Their average risk score is 3.30, 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. Crespo-Diaz's median patient age at 68, with 36% women.
Dr. Crespo-Diaz's Medicare patients by age, 2024
Dr. Crespo-Diaz's Medicare patients by sex, 2024
- Women8238%
- Men13362%
Chronic conditions among Dr. Crespo-Diaz's Medicare patients, 2024
- Heart failure75%
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease68%
- Ischemic heart disease64%
- Atrial fibrillation50%
- Diabetes49%
- Arthritis36%
Share of Medicare patients with each condition. A patient can have several.
Dr. Crespo-Diaz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women36%
- Men64%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ruben J. Crespo-Diaz wrote 1,303 Medicare Part D claims in 2024
In 2024, Dr. Crespo-Diaz wrote 1,303 Medicare Part D claims for 234 patients. 82% of them were for generic drugs. CMS names the drug for 1,127 of them, across 25 drugs with 11 or more claims each, at $223,058 in total drug cost. In 2023, CMS named 102 claims across 6 drugs.
Dr. Crespo-Diaz's Part D claims by kind of drug, 2024
- Generic1,070 claims82%
- Brand-name233 claims18%
Dr. Crespo-Diaz'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. Crespo-Diaz's Part D claims, 2024
- Antibiotics6%84 of 1,303 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: 1022024: 1,1271005%
Drugs named by CMS: 25 in 2024, 6 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. Ruben J. Crespo-Diaz offers telehealth to Medicare patients
Dr. Crespo-Diaz accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Crespo-Diaz as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Ruben J. Crespo-Diaz has 27 publications on record
Dmand AI links 27 papers to Dr. Crespo-Diaz, published from 2010 to 2025. 2024 was the busiest year, with 5. The most frequent topics are Heart Failure, Stem Cells and Stem Cell Transplantation. Dr. Crespo-Diaz has published most often in J Am Heart Assoc. Dr. Crespo-Diaz's most frequent co-authors are Atta Behfar, MD, Jason Alan Bartos, MD and Shannon M. Dunlay, MD.
Dr. Crespo-Diaz's papers by year, 2010 to 2025
Topics Dr. Crespo-Diaz writes about most
- Heart Failure
- Stem Cells
- Stem Cell Transplantation
- Cell- and Tissue-Based Therapy
- Myocardial Infarction
- Ventricular Remodeling
- Disease Models, Animal
- Mice, Inbred C57BL
Dr. Crespo-Diaz's most frequent co-authors
- Atta Behfar, MD17 shared papers
- Jason Alan Bartos, MD2 shared papers
- Shannon M. Dunlay, MD2 shared papers
Recent publications by Dr. Crespo-Diaz
JACC Clin Electrophysiol
See who Dr. Crespo-Diaz researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Crespo-Diaz works with, so you can find a warm path to the right cardiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ruben J. Crespo-Diaz received $1,341 in industry payments from 2020 to 2025
CMS Open Payments shows 10 general payments to Dr. Crespo-Diaz from 3 drug and device companies from 2020 to 2025. Food and beverage make up the largest share, 88% of the total. Abbott Laboratories paid the most, $1,032.
General payments to Dr. Crespo-Diaz by program year, 2020 to 2025
General payments to Dr. Crespo-Diaz by kind, 2020 to 2025
- Food and beverage$1,17788%
- Education$16412%
Companies that paid Dr. Crespo-Diaz the most, 2020 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ruben J. Crespo-Diaz graduated from University of Puerto Rico School of Medicine
Dr. Crespo-Diaz graduated from University of Puerto Rico School of Medicine in 2016.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Ruben J. Crespo-Diaz accepts plans from 15 insurance carriers
Dr. Crespo-Diaz is in network with 15 carriers, including Aetna, Elevance and Excellus BlueCross BlueShield. Medicare plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Excellus BlueCross BlueShield
- Blue Cross Blue Shield of Michigan
- Medica
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- HCSC
- +7 more carriersWith a free account
Plan types Dr. Crespo-Diaz accepts, by number of carriers
- Medicare10
- PPO10
- HMO7
- POS7
- EPO4
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Ruben J. Crespo-Diaz'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) |
| 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) |
| 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. Ruben J. Crespo-Diaz
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. Ruben J. Crespo-Diaz's NPI number?
Dr. Ruben J. Crespo-Diaz's NPI number is 1477908804. It was assigned on May 4, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Ruben J. Crespo-Diaz?
Dr. Ruben J. Crespo-Diaz is a cardiologist in Rochester, Minnesota. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Dr. Ruben J. Crespo-Diaz practice?
Dr. Crespo-Diaz practices at 1216 Second Street Southwest, Rochester, MN 55902. Dr. Crespo-Diaz's primary practice is Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota, part of Mayo Clinic. Dmand AI also links Dr. Crespo-Diaz to 3 hospitals, 3 medical groups, 2 group practices and clinics and 1 hospice.
What is Dr. Ruben J. Crespo-Diaz's office phone number?
The practice phone on file for Dr. Crespo-Diaz is (507) 255-5123.
What is Dr. Ruben J. Crespo-Diaz's medical license number?
Dr. Crespo-Diaz holds Minnesota license 64459.
Which hospitals is Dr. Ruben J. Crespo-Diaz affiliated with?
Dr. Crespo-Diaz practices at Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota. Dr. Crespo-Diaz is also affiliated with Mayo Clinic Health System in Mankato. Dmand AI links Dr. Crespo-Diaz to 3 more hospitals.
What medical group is Dr. Ruben J. Crespo-Diaz part of?
Dr. Crespo-Diaz is linked to Mayo Clinic. Dmand AI links Dr. Crespo-Diaz to 3 more medical groups.
Does Dr. Ruben J. Crespo-Diaz accept Medicare?
Yes. CMS data shows Dr. Crespo-Diaz billed Medicare for 470 services in 2024, and Dr. Crespo-Diaz accepts Medicare assignment.
Does Dr. Ruben J. Crespo-Diaz offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Crespo-Diaz as offering telehealth services.
How many Medicare patients does Dr. Ruben J. Crespo-Diaz see?
CMS counts 215 Medicare patients who saw Dr. Crespo-Diaz in 2024, with an average age of 69.
Show 8 more questionsShow fewer questions
What services does Dr. Ruben J. Crespo-Diaz bill to Medicare?
In 2024, Dr. Crespo-Diaz's most billed Medicare services were medicare service (G2212), office visit, established patient (99215) and hospital inpatient care (99233).
Where did Dr. Ruben J. Crespo-Diaz go to medical school?
Dr. Crespo-Diaz graduated from University of Puerto Rico School of Medicine in 2016.
What drugs does Dr. Ruben J. Crespo-Diaz prescribe most?
In 2024 Medicare Part D data, Dr. Crespo-Diaz's most prescribed drugs by claims were Metoprolol Succinate, Rosuvastatin Calcium and Spironolactone.
Has Dr. Ruben J. Crespo-Diaz received payments from drug or device companies?
CMS Open Payments shows $1,341 in general payments to Dr. Crespo-Diaz from 3 companies from 2020 to 2025. The largest total came from Abbott Laboratories.
How long has Dr. Ruben J. Crespo-Diaz been practicing?
Dr. Crespo-Diaz graduated from medical school in 2016, 10 years ago.
Does Dr. Ruben J. Crespo-Diaz do research?
Dmand AI links 27 publications to Dr. Crespo-Diaz, published from 2010 to 2025.
Who does Dr. Ruben J. Crespo-Diaz publish with?
Dr. Crespo-Diaz's most frequent co-authors are Atta Behfar, MD (17 shared papers), Jason Alan Bartos, MD (2 shared papers) and Shannon M. Dunlay, MD (2 shared papers).
What insurance does Dr. Ruben J. Crespo-Diaz accept?
Dr. Crespo-Diaz is in network with 15 carriers, including Aetna, Elevance and Excellus BlueCross BlueShield. Medicare plans come from the most carriers, 10. Check the plan with the practice before a visit.
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