Dr. Sidney Robert Block, MD
- Part D claims, 2024
- 143
- Hospital affiliations
- 1
- Industry payments
- $530
- Medical group
- 1
- State license
- 1
- Practice address
- 118 Northport Ave, Belfast, ME 04915
- Practice phone
- Call (207) 338-2500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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. Sidney Robert Block is a rheumatologist in Belfast, Maine
Dr. Block practices at MaineHealth Waldo Hospital in Belfast, Maine, part of MaineHealth.
Dr. Block's NPI, 1841290376, was assigned on July 27, 2005. Dr. Block graduated from Johns Hopkins University School of Medicine in 1967. Dr. Block holds Maine license 008060.
- NPI
- 1841290376NPI Registry (opens in a new tab)
- NPI enumeration date
- July 27, 2005
- NPI status
- Active
- Practice phone
- (207) 338-2500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 85
- Medical school graduation
- 1967
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Sidney Robert Block practices at MaineHealth Waldo Hospital in Belfast, Maine
Dr. Block's primary practice is MaineHealth Waldo Hospital, at 118 Northport Ave, Belfast, ME 04915 in Waldo County. The practice phone is (207) 338-2500.
- MaineHealth Waldo Hospital118 Northport Ave, Belfast, ME 04915 · Waldo CountyPhone(207) 338-2500
Source: Dmand AI Affiliation Data
Dr. Sidney Robert Block is affiliated with 2 sites of care and 1 medical group
Dr. Block's primary practice is MaineHealth Waldo Hospital in Belfast, Maine, part of MaineHealth. The medical group on file is MaineHealth Waldo Hospital. Dmand AI also links Dr. Block to 1 more physician office, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Sidney Robert 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 |
|---|---|
| MaineHealth Waldo Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Sidney Robert Block is one of 28 rheumatologists in Maine
Rheumatology is Dr. Block's primary specialty in the NPI Registry, under taxonomy code 207RR0500X. Dr. Block is licensed in Maine.
Specialties and state licenses
- Rheumatology, MainePrimary
Rheumatologists near Dr. Block
Counts of rheumatologists 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. Sidney Robert Block's patients have a median age of 75
Across all payers, Dmand AI patient panel data puts Dr. Block's median patient age at 75, with 62% 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 75
Patient panel by sex, all payers
- Women62%
- Men38%
Source: Dmand AI Patient Panel Data
Dr. Sidney Robert Block wrote 143 Medicare Part D claims in 2024
In 2024, Dr. Block wrote 143 Medicare Part D claims for 73 patients. 82% of them were for generic drugs. CMS names the drug for 81 of them, across 3 drugs with 11 or more claims each, at $4,309 in total drug cost. In 2023, CMS named 957 claims across 25 drugs.
Dr. Block's Part D claims by kind of drug, 2024
- Generic117 claims82%
- Brand-name and other26 claims18%
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: 9572024: 8192%
Drugs named by CMS: 3 in 2024, 25 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. Sidney Robert Block received $530 in industry payments from 2016 to 2023
CMS Open Payments shows 5 general payments to Dr. Block from 3 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 54% of the total. Johnson & Johnson Health Care Systems Inc. paid the most, $285.
General payments to Dr. Block by program year, 2016 to 2023
General payments to Dr. Block by kind, 2016 to 2023
- Food and beverage$28554%
- Consulting fees$20038%
- Education$458%
Companies that paid Dr. Block the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Sidney Robert Block graduated from Johns Hopkins University School of Medicine
Dr. Block graduated from Johns Hopkins University School of Medicine in 1967.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Sidney Robert 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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| 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. Sidney Robert 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. Sidney Robert Block's NPI number?
Dr. Sidney Robert Block's NPI number is 1841290376. It was assigned on July 27, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Sidney Robert Block?
Dr. Sidney Robert Block is a rheumatologist in Belfast, Maine. The primary specialty in the NPI Registry is Rheumatology Physician (taxonomy code 207RR0500X).
Where does Dr. Sidney Robert Block practice?
Dr. Block practices at 118 Northport Ave, Belfast, ME 04915. Dr. Block's primary practice is MaineHealth Waldo Hospital in Belfast, Maine, part of MaineHealth. Dmand AI also links Dr. Block to 1 physician office.
What is Dr. Sidney Robert Block's office phone number?
The practice phone on file for Dr. Block is (207) 338-2500.
What is Dr. Sidney Robert Block's medical license number?
Dr. Block holds Maine license 008060.
Which hospitals is Dr. Sidney Robert Block affiliated with?
Dr. Block practices at MaineHealth Waldo Hospital in Belfast, Maine.
What medical group is Dr. Sidney Robert Block part of?
Dr. Block is linked to MaineHealth Waldo Hospital.
Where did Dr. Sidney Robert Block go to medical school?
Dr. Block graduated from Johns Hopkins University School of Medicine in 1967.
What drugs does Dr. Sidney Robert Block prescribe most?
In 2024 Medicare Part D data, Dr. Block's most prescribed drugs by claims were Methotrexate, Hydroxychloroquine Sulfate and Prednisone.
Has Dr. Sidney Robert Block received payments from drug or device companies?
CMS Open Payments shows $530 in general payments to Dr. Block from 3 companies from 2016 to 2023. The largest total came from Johnson & Johnson Health Care Systems Inc.
How long has Dr. Sidney Robert Block been practicing?
Dr. Block graduated from medical school in 1967, 59 years ago.
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