Calvin M. Knowles
- Medicare patients, 2024
- 336
- Part D claims, 2024
- 722
- Hospital affiliations
- 5
- Industry payments
- $33
- Medical groups
- 5
- Practice address
- 100 McGregor Street, Manchester, NH 03102
- Practice phone
- Call (603) 668-3545
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Calvin Knowles' 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.
Calvin M. Knowles is a physician assistant in Manchester, New Hampshire
Calvin Knowles practices at Catholic Medical Center in Manchester, New Hampshire, part of HCA Healthcare.
Calvin Knowles' NPI, 1497345706, was assigned on January 20, 2021. Calvin Knowles holds New Hampshire license 2041.
- NPI
- 1497345706NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8325415516
- NPI enumeration date
- January 20, 2021
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (603) 668-3545
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 30
- Medical school graduation
- 2022
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Calvin M. Knowles practices at Catholic Medical Center in Manchester, New Hampshire
Calvin Knowles' primary practice is Catholic Medical Center, at 100 McGregor Street, Manchester, NH 03102 in Hillsborough County. The practice phone is (603) 668-3545.
- Catholic Medical Center100 McGregor Street, Manchester, NH 03102 · Hillsborough CountyPhone(603) 668-3545
Source: Dmand AI Affiliation Data
Calvin M. Knowles is affiliated with 5 sites of care and 5 medical groups
Calvin Knowles' primary practice is Catholic Medical Center in Manchester, New Hampshire, part of HCA Healthcare. Calvin Knowles is also affiliated with Concord Hospital. The medical group on file is Concord Hospital. Dmand AI also links Calvin Knowles to 3 more hospitals and 4 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Calvin M. Knowles' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Calvin Knowles practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Catholic Medical Center | Available with a free account |
| +4 more sites and 4 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Calvin M. Knowles is one of 796 physician assistants in New Hampshire
Physician assistant is Calvin Knowles' primary specialty in the NPI Registry, under taxonomy code 363A00000X. Calvin Knowles is licensed in New Hampshire.
Specialties and state licenses
- Physician assistant, New HampshirePrimary
Physician assistants near Calvin Knowles
Counts of physician assistants 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
Calvin M. Knowles treated 336 Medicare patients in 2024, average age 75
CMS counts 336 Medicare patients who saw Calvin Knowles in 2024. The largest group is 75 to 84, with 129 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 16% are also on Medicaid. Their average risk score is 1.39, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Calvin Knowles' median patient age at 66, with 46% women.
Calvin Knowles' Medicare patients by age, 2024
Calvin Knowles' Medicare patients by sex, 2024
- Women16048%
- Men17652%
Chronic conditions among Calvin Knowles' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis54%
- Ischemic heart disease50%
- Atrial fibrillation46%
- Diabetes39%
- Heart failure39%
- Anxiety30%
Share of Medicare patients with each condition. A patient can have several.
Calvin Knowles' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women46%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Calvin M. Knowles wrote 722 Medicare Part D claims in 2024
In 2024, Calvin Knowles wrote 722 Medicare Part D claims for 207 patients. 86% of them were for generic drugs.
Calvin Knowles' Part D claims by kind of drug, 2024
- Generic621 claims86%
- Brand-name101 claims14%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Calvin M. Knowles takes part in Medicare
Calvin Knowles accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Calvin M. Knowles received $33 in industry payments in 2025
CMS Open Payments shows 2 general payments to Calvin Knowles from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. BridgeBio Pharma, Inc. paid the most, $18.
Companies that paid Calvin Knowles 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 Calvin M. Knowles'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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | 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 Calvin M. Knowles
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Calvin M. Knowles' NPI number?
Calvin M. Knowles' NPI number is 1497345706. It was assigned on January 20, 2021, and it is active in the NPI Registry.
What does Calvin M. Knowles specialize in?
Calvin M. Knowles is a physician assistant in Manchester, New Hampshire. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Calvin M. Knowles practice?
Calvin Knowles practices at 100 McGregor Street, Manchester, NH 03102. Calvin Knowles' primary practice is Catholic Medical Center in Manchester, New Hampshire, part of HCA Healthcare. Dmand AI also links Calvin Knowles to 3 hospitals and 4 medical groups.
What is Calvin M. Knowles' office phone number?
The practice phone on file for Calvin Knowles is (603) 668-3545.
What is Calvin M. Knowles' medical license number?
Calvin Knowles holds New Hampshire license 2041.
Which hospitals is Calvin M. Knowles affiliated with?
Calvin Knowles practices at Catholic Medical Center in Manchester, New Hampshire. Calvin Knowles is also affiliated with Concord Hospital. Dmand AI links Calvin Knowles to 3 more hospitals.
What medical group is Calvin M. Knowles part of?
Calvin Knowles is linked to Concord Hospital. Dmand AI links Calvin Knowles to 4 more medical groups.
Does Calvin M. Knowles accept Medicare?
Yes. CMS lists Calvin Knowles as accepting Medicare assignment.
How many Medicare patients does Calvin M. Knowles see?
CMS counts 336 Medicare patients who saw Calvin Knowles in 2024, with an average age of 75.
Has Calvin M. Knowles received payments from drug or device companies?
CMS Open Payments shows $33 in general payments to Calvin Knowles from 2 companies from 2025 to 2025. The largest total came from BridgeBio Pharma, Inc.
How long has Calvin M. Knowles been practicing?
Calvin Knowles graduated from medical school in 2022, 4 years ago.
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