Dr. David Samuel Block, MD
- Medicare services, 2018
- 24
- Part D claims, 2024
- 230
- Hospital affiliations
- 1
- Industry payments
- $164
- Medical group
- 1
- Practice address
- 600 N Wolfe St, Baltimore, MD 21287
- Practice phone
- Call (855) 662-3017
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Johns Hopkins Hospital Nelson/Harvey Building
Baltimore, Maryland
Find Dr. Block'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. David Samuel Block is an internist in Baltimore, Maryland
Dr. Block practices at Johns Hopkins Hospital Nelson/Harvey Building in Baltimore, Maryland.
Dr. Block's NPI, 1679539787, was assigned on April 26, 2006. Dr. Block graduated from Perelman School of Med at the University of Pennsylvania in 1987. Dr. Block holds Maryland license D40651.
- NPI
- 1679539787NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2264564327
- NPI enumeration date
- April 26, 2006
- NPI status
- Active
- Practice phone
- (855) 662-3017
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. David Samuel Block practices at Johns Hopkins Hospital Nelson/Harvey Building in Baltimore, Maryland
Dr. Block's primary practice is Johns Hopkins Hospital Nelson/Harvey Building, at 600 N Wolfe St, Baltimore, MD 21287 in Baltimore City. The practice phone is (855) 662-3017.
- Johns Hopkins Hospital Nelson/Harvey Building600 N Wolfe St, Baltimore, MD 21287 · Baltimore CityPhone(855) 662-3017
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. David Samuel Block is affiliated with 3 sites of care and 1 medical group
Dr. Block's primary practice is Johns Hopkins Hospital Nelson/Harvey Building in Baltimore, Maryland. Dr. Block is also affiliated with The Johns Hopkins Hospital. The medical group on file is Johns Hopkins University. Dmand AI also links Dr. Block to 1 more group practice or clinic, 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. David Samuel Block's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Block practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Johns Hopkins Hospital Nelson/Harvey Building | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David Samuel Block is one of 3,320 internists in Maryland
Internal medicine is Dr. Block's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Block is licensed in Maryland.
Specialties and state licenses
- Internal medicine, MarylandPrimary
Internists near Dr. Block
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. David Samuel Block billed Medicare for 24 services in 2018
CMS data shows 24 Medicare services from Dr. Block across 1 procedure code in 2018, all of them office visits. Medicare paid $2,087 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Block's Medicare services by type, 2017 to 2018
- 2017
- 2018
- Office and hospital visits
- 2017: 342018: 2429%
Dr. Block compared with the Maryland median for internists, 2018
- Dr. Block
- Maryland median
- Medicare services
- 24vs 65696% below
- Part D claims
- 153vs 30950% below
Medians across 3,215 internists in Maryland with Dmand AI profiles that report each measure.
Dr. Block'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. Block and other internists in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David Samuel Block's patients have a median age of 68
Across all payers, Dmand AI patient panel data puts Dr. Block's median patient age at 68, with 44% women.
Dr. Block'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
- Women44%
- Men56%
Source: Dmand AI Patient Panel Data
Dr. David Samuel Block wrote 230 Medicare Part D claims in 2024
In 2024, Dr. Block wrote 230 Medicare Part D claims. 53% of them were for generic drugs. CMS names the drug for 153 of them, across 9 drugs with 11 or more claims each, at $238,177 in total drug cost. In 2023, CMS named 156 claims across 10 drugs.
Dr. Block's Part D claims by kind of drug, 2024
- Generic121 claims53%
- Brand-name109 claims47%
Dr. Block'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, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1562024: 1532%
Drugs named by CMS: 9 in 2024, 10 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
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Dr. David Samuel Block received $164 in industry payments in 2016
CMS Open Payments shows 1 general payment to Dr. Block from 1 drug or device company in 2016. Food and beverage make up the largest share, 100% of the total. Pfizer Inc. paid the most, $164.
Companies that paid Dr. Block the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. David Samuel Block graduated from Perelman School of Med at the University of Pennsylvania
Dr. Block graduated from Perelman School of Med at the University of Pennsylvania in 1987.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. David Samuel Block'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 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. David Samuel Block
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. David Samuel Block's NPI number?
Dr. David Samuel Block's NPI number is 1679539787. It was assigned on April 26, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. David Samuel Block?
Dr. David Samuel Block is an internist in Baltimore, Maryland. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. David Samuel Block practice?
Dr. Block practices at 600 N Wolfe St, Baltimore, MD 21287. Dr. Block's primary practice is Johns Hopkins Hospital Nelson/Harvey Building in Baltimore, Maryland. Dmand AI also links Dr. Block to 1 group practice or clinic.
What is Dr. David Samuel Block's office phone number?
The practice phone on file for Dr. Block is (855) 662-3017.
What is Dr. David Samuel Block's medical license number?
Dr. Block holds Maryland license D40651.
Which hospitals is Dr. David Samuel Block affiliated with?
Dr. Block is affiliated with The Johns Hopkins Hospital.
What medical group is Dr. David Samuel Block part of?
Dr. Block is linked to Johns Hopkins University.
Does Dr. David Samuel Block accept Medicare?
Yes. CMS data shows Dr. Block billed Medicare for 24 services in 2018.
What services does Dr. David Samuel Block bill to Medicare?
In 2018, Dr. Block's most billed Medicare services were office visit, established patient (99215).
Where did Dr. David Samuel Block go to medical school?
Dr. Block graduated from Perelman School of Med at the University of Pennsylvania in 1987.
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What drugs does Dr. David Samuel Block prescribe most?
In 2024 Medicare Part D data, Dr. Block's most prescribed drugs by claims were Tivicay, Ritonavir and Descovy.
Has Dr. David Samuel Block received payments from drug or device companies?
CMS Open Payments shows $164 in general payments to Dr. Block from 1 company from 2016 to 2016. The largest total came from Pfizer Inc.
How long has Dr. David Samuel Block been practicing?
Dr. Block graduated from medical school in 1987, 39 years ago.
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