Dr. Calvin Gerald Ludwig, MD
- Part D claims, 2024
- 79
- Publications
- 7
- Hospital affiliations
- 1
- State license
- 1
- Year NPI issued
- 2023
- Practice address
- 800 Washington Street, Boston, MA 02111
- Practice phone
- Call (617) 636-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Ludwig'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. Calvin Gerald Ludwig is an internist in Boston, Massachusetts
Dr. Ludwig practices at Tufts Medical Center in Boston, Massachusetts, part of Tufts Medicine.
Dr. Ludwig's NPI, 1407541485, was assigned on April 6, 2023. Dr. Ludwig holds Massachusetts license 3013982.
- NPI
- 1407541485NPI Registry (opens in a new tab)
- NPI enumeration date
- April 6, 2023
- NPI status
- Active
- Practice phone
- (617) 636-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Calvin Gerald Ludwig practices at Tufts Medical Center in Boston, Massachusetts
Dr. Ludwig's primary practice is Tufts Medical Center, at 800 Washington Street, Boston, MA 02111 in Suffolk County. The practice phone is (617) 636-5000.
- Tufts Medical Center800 Washington Street, Boston, MA 02111 · Suffolk CountyPhone(617) 636-5000
Source: Dmand AI Affiliation Data
Dr. Calvin Gerald Ludwig is affiliated with 2 sites of care
Dr. Ludwig's primary practice is Tufts Medical Center in Boston, Massachusetts, part of Tufts Medicine. Dmand AI also links Dr. Ludwig to 1 imaging center, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Calvin Gerald Ludwig's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ludwig practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Tufts Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Tufts Medicine and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Calvin Gerald Ludwig is one of 5,528 internists in Massachusetts
Internal medicine is Dr. Ludwig's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Ludwig is licensed in Massachusetts.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
Internists near Dr. Ludwig
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. Calvin Gerald Ludwig's patients have a median age of 52
Across all payers, Dmand AI patient panel data puts Dr. Ludwig's median patient age at 52, with 17% women.
Dr. Ludwig's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 52
Patient panel by sex, all payers
- Women17%
- Men83%
Source: Dmand AI Patient Panel Data
Dr. Calvin Gerald Ludwig wrote 79 Medicare Part D claims in 2024
In 2024, Dr. Ludwig wrote 79 Medicare Part D claims for 39 patients. 91% of them were for generic drugs.
Dr. Ludwig's Part D claims by kind of drug, 2024
- Generic72 claims91%
- Brand-name and other7 claims9%
Drug classes CMS tracks in Dr. Ludwig's Part D claims, 2024
- Antibiotics28%22 of 79 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Calvin Gerald Ludwig has 7 publications on record
Dmand AI links 7 papers to Dr. Ludwig, published from 2019 to 2024. 2021 was the busiest year, with 2. The most frequent topics are Aneurysm, Ruptured, Cerebral Angiography and Intracranial Aneurysm. Dr. Ludwig's most frequent co-authors are Adel Malek, MD, Megan Leigh Insco, MD, PhD and Leonard I. Zon, MD.
Dr. Ludwig's papers by year, 2019 to 2024
Topics Dr. Ludwig writes about most
- Aneurysm, Ruptured
- Cerebral Angiography
- Intracranial Aneurysm
- Area Under Curve
- Stroke
Dr. Ludwig's most frequent co-authors
- Adel Malek, MD3 shared papers
- Megan Leigh Insco, MD, PhD2 shared papers
- Leonard I. Zon, MD2 shared papers
Recent publications by Dr. Ludwig
{'i': 'CDK13', '#text': 'Oncogenic mutations impede nuclear RNA surveillance.'} (opens in a new tab)
Science
World Neurosurg
J Neurosurg Spine
See who Dr. Ludwig researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Ludwig works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Sources for Dr. Calvin Gerald Ludwig'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 (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 |
| 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. Calvin Gerald Ludwig
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. Calvin Gerald Ludwig's NPI number?
Dr. Calvin Gerald Ludwig's NPI number is 1407541485. It was assigned on April 6, 2023, and it is active in the NPI Registry.
What kind of doctor is Dr. Calvin Gerald Ludwig?
Dr. Calvin Gerald Ludwig is an internist in Boston, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Calvin Gerald Ludwig practice?
Dr. Ludwig practices at 800 Washington Street, Boston, MA 02111. Dr. Ludwig's primary practice is Tufts Medical Center in Boston, Massachusetts, part of Tufts Medicine. Dmand AI also links Dr. Ludwig to 1 imaging center.
What is Dr. Calvin Gerald Ludwig's office phone number?
The practice phone on file for Dr. Ludwig is (617) 636-5000.
What is Dr. Calvin Gerald Ludwig's medical license number?
Dr. Ludwig holds Massachusetts license 3013982.
Which hospitals is Dr. Calvin Gerald Ludwig affiliated with?
Dr. Ludwig practices at Tufts Medical Center in Boston, Massachusetts.
How long has Dr. Calvin Gerald Ludwig been practicing?
Dr. Ludwig's NPI was assigned in 2023.
Does Dr. Calvin Gerald Ludwig do research?
Dmand AI links 7 publications to Dr. Ludwig, published from 2019 to 2024.
Who does Dr. Calvin Gerald Ludwig publish with?
Dr. Ludwig's most frequent co-authors are Adel Malek, MD (3 shared papers), Megan Leigh Insco, MD, PhD (2 shared papers) and Leonard I. Zon, MD (2 shared papers).
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