Dr. Marvin Diaz-Lacayo, MD
- Medicare services, 2024
- 611
- Medicare patients, 2024
- 234
- Part D claims, 2024
- 8,244
- Hospital affiliations
- 6
- Industry payments
- $22
- Practice address
- 1690 Crown Colony Dr, Quincy, MA 02169
- Practice phone
- Call (781) 356-3336
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Tufts Medical Center Community Care, Inc
Quincy, Massachusetts
Find Dr. Diaz-Lacayo'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. Marvin Diaz-Lacayo is an internist in Quincy, Massachusetts
Dr. Diaz-Lacayo practices at Tufts Medical Center Community Care, Inc in Quincy, Massachusetts.
Dr. Diaz-Lacayo's NPI, 1477590214, was assigned on June 1, 2006. Dr. Diaz-Lacayo holds Massachusetts license 223423.
- NPI
- 1477590214NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6709899024
- NPI enumeration date
- June 1, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (781) 356-3336
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Marvin Diaz-Lacayo practices at Tufts Medical Center Community Care, Inc in Quincy, Massachusetts
Dr. Diaz-Lacayo's primary practice is Tufts Medical Center Community Care, Inc, at 1690 Crown Colony Dr, Quincy, MA 02169 in Norfolk County. The practice phone is (781) 356-3336.
- Tufts Medical Center Community Care, Inc1690 Crown Colony Dr, Quincy, MA 02169 · Norfolk CountyPhone(781) 356-3336
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Marvin Diaz-Lacayo is affiliated with 13 sites of care and 4 medical groups
Dr. Diaz-Lacayo's primary practice is Tufts Medical Center Community Care, Inc in Quincy, Massachusetts. Dr. Diaz-Lacayo is also affiliated with Brigham and Women's Hospital. The medical group on file is Steward Medical Group. Dmand AI also links Dr. Diaz-Lacayo to 5 more hospitals, 4 group practices and clinics, 3 medical groups, 1 home health agency and 1 skilled nursing facility, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Marvin Diaz-Lacayo's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Diaz-Lacayo practices, 12 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Tufts Medical Center Community Care, Inc | Available with a free account |
| +12 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Marvin Diaz-Lacayo is one of 5,528 internists in Massachusetts
Internal medicine is Dr. Diaz-Lacayo's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Diaz-Lacayo is licensed in Massachusetts.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
Internists near Dr. Diaz-Lacayo
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. Marvin Diaz-Lacayo billed Medicare for 611 services in 2024
CMS data shows 611 Medicare services from Dr. Diaz-Lacayo across 9 procedure codes in 2024, for 234 Medicare patients. Medicare paid $52,655 for them. Every service was in an office.
Dr. Diaz-Lacayo's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3902024: 44113%
- Other services
- 2023: 1012024: 12322%
- Tests and treatments
- 2023: 412024: 4715%
Dr. Diaz-Lacayo compared with the Massachusetts median for internists, 2024
- Dr. Diaz-Lacayo
- Massachusetts median
- Medicare services
- 611vs 43142% above
- Medicare patients
- 234vs 19421% above
- Part D claims
- 7,441vs 40218.5 times
Medians across 5,369 internists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Diaz-Lacayo'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. Diaz-Lacayo and other internists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Marvin Diaz-Lacayo treated 234 Medicare patients in 2024, average age 72
CMS counts 234 Medicare patients who saw Dr. Diaz-Lacayo in 2024. The largest group is 65 to 74, with 104 patients. 65% of them have high blood pressure, and 65% have high cholesterol. 38% are also on Medicaid. Their average risk score is 1.29, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Diaz-Lacayo's median patient age at 58, with 46% women.
Dr. Diaz-Lacayo's Medicare patients by age, 2024
Dr. Diaz-Lacayo's Medicare patients by sex, 2024
- Women12754%
- Men10746%
Chronic conditions among Dr. Diaz-Lacayo's Medicare patients, 2024
- High blood pressure65%
- High cholesterol65%
- Mood disorders33%
- Anxiety30%
- Depression30%
- Arthritis29%
- Diabetes25%
- Chronic kidney disease18%
Share of Medicare patients with each condition. A patient can have several.
Dr. Diaz-Lacayo's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women46%
- Men52%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Marvin Diaz-Lacayo wrote 8,244 Medicare Part D claims in 2024
In 2024, Dr. Diaz-Lacayo wrote 8,244 Medicare Part D claims for 396 patients. 87% of them were for generic drugs. CMS names the drug for 7,441 of them, across 142 drugs with 11 or more claims each, at $509,082 in total drug cost. In 2023, CMS named 7,928 claims across 158 drugs.
Dr. Diaz-Lacayo's Part D claims by kind of drug, 2024
- Generic7,186 claims87%
- Brand-name1,033 claims13%
- Other25 claims0%
Dr. Diaz-Lacayo'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. Diaz-Lacayo's Part D claims, 2024
- Opioids6%477 of 8,244 claims
- Antibiotics2%193 of 8,244 claims
- Antipsychotics, patients 65 and over1%66 of 8,244 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: 7,9282024: 7,4416%
Drugs named by CMS: 142 in 2024, 158 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. Marvin Diaz-Lacayo offers telehealth to Medicare patients
Dr. Diaz-Lacayo accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Diaz-Lacayo as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Marvin Diaz-Lacayo received $22 in industry payments in 2025
CMS Open Payments shows 1 general payment to Dr. Diaz-Lacayo from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Hologic Inc paid the most, $22.
Companies that paid Dr. Diaz-Lacayo the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Marvin Diaz-Lacayo'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Marvin Diaz-Lacayo
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. Marvin Diaz-Lacayo's NPI number?
Dr. Marvin Diaz-Lacayo's NPI number is 1477590214. It was assigned on June 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Marvin Diaz-Lacayo?
Dr. Marvin Diaz-Lacayo is an internist in Quincy, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Marvin Diaz-Lacayo practice?
Dr. Diaz-Lacayo practices at 1690 Crown Colony Dr, Quincy, MA 02169. Dr. Diaz-Lacayo's primary practice is Tufts Medical Center Community Care, Inc in Quincy, Massachusetts. Dmand AI also links Dr. Diaz-Lacayo to 5 hospitals, 4 group practices and clinics, 3 medical groups, 1 home health agency and 1 skilled nursing facility.
What is Dr. Marvin Diaz-Lacayo's office phone number?
The practice phone on file for Dr. Diaz-Lacayo is (781) 356-3336.
What is Dr. Marvin Diaz-Lacayo's medical license number?
Dr. Diaz-Lacayo holds Massachusetts license 223423.
Which hospitals is Dr. Marvin Diaz-Lacayo affiliated with?
Dr. Diaz-Lacayo is affiliated with Brigham and Women's Hospital. Dmand AI links Dr. Diaz-Lacayo to 5 more hospitals.
What medical group is Dr. Marvin Diaz-Lacayo part of?
Dr. Diaz-Lacayo is linked to Steward Medical Group. Dmand AI links Dr. Diaz-Lacayo to 3 more medical groups.
Does Dr. Marvin Diaz-Lacayo accept Medicare?
Yes. CMS data shows Dr. Diaz-Lacayo billed Medicare for 611 services in 2024, and Dr. Diaz-Lacayo accepts Medicare assignment.
Does Dr. Marvin Diaz-Lacayo offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Diaz-Lacayo as offering telehealth services.
How many Medicare patients does Dr. Marvin Diaz-Lacayo see?
CMS counts 234 Medicare patients who saw Dr. Diaz-Lacayo in 2024, with an average age of 72.
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What services does Dr. Marvin Diaz-Lacayo bill to Medicare?
In 2024, Dr. Diaz-Lacayo's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and nursing facility care (99309).
What drugs does Dr. Marvin Diaz-Lacayo prescribe most?
In 2024 Medicare Part D data, Dr. Diaz-Lacayo's most prescribed drugs by claims were Atorvastatin Calcium, Lisinopril and Omeprazole.
Has Dr. Marvin Diaz-Lacayo received payments from drug or device companies?
CMS Open Payments shows $22 in general payments to Dr. Diaz-Lacayo from 1 company from 2025 to 2025. The largest total came from Hologic Inc.
How long has Dr. Marvin Diaz-Lacayo been practicing?
Dr. Diaz-Lacayo graduated from medical school in 1999, 27 years ago.
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