Dr. Katherine M. Johnson, MD
- Part D claims, 2022
- 11
- Hospital affiliations
- 1
- Medical groups
- 3
- State license
- 1
- Year NPI issued
- 2012
- Practice address
- 55 North Ave, Mendon, MA 01756
- Practice phone
- Call (508) 334-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Umass Memorial Medical Center
Mendon, Massachusetts
Find Dr. Johnson's professional email, personal email and mobile number
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Dr. Katherine M. Johnson is a maternal-fetal medicine specialist in Mendon, Massachusetts
Dr. Johnson practices at Umass Memorial Medical Center in Mendon, Massachusetts.
Dr. Johnson's NPI, 1134481880, was assigned on June 8, 2012. Dr. Johnson graduated from Harvard Medical School in 2012. Dr. Johnson holds Massachusetts license 265750.
- NPI
- 1134481880NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8325364862
- NPI enumeration date
- June 8, 2012
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (508) 334-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Katherine M. Johnson practices at Umass Memorial Medical Center in Mendon, Massachusetts
Dr. Johnson's primary practice is Umass Memorial Medical Center, at 55 North Ave, Mendon, MA 01756 in Worcester County. The practice phone is (508) 334-1000.
- Umass Memorial Medical Center55 North Ave, Mendon, MA 01756 · Worcester CountyPhone(508) 334-1000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Katherine M. Johnson is affiliated with 4 sites of care and 3 medical groups
Dr. Johnson's primary practice is Umass Memorial Medical Center in Mendon, Massachusetts. Dr. Johnson is also affiliated with UMass Memorial Medical Center - University Campus. The medical group on file is UMass Memorial Medical Group. Dmand AI also links Dr. Johnson to 2 more group practices and clinics and 2 medical groups, 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. Katherine M. Johnson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johnson practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Umass Memorial Medical Center | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Katherine M. Johnson is one of 79 maternal-fetal medicine specialists in Massachusetts
Maternal and fetal medicine is Dr. Johnson's primary specialty in the NPI Registry, under taxonomy code 207VM0101X. Dr. Johnson is licensed in Massachusetts.
Specialties and state licenses
- Maternal and fetal medicine, MassachusettsPrimary
Maternal-fetal medicine specialists near Dr. Johnson
Counts of maternal-fetal medicine specialists 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. Katherine M. Johnson's patients have a median age of 34
Across all payers, Dmand AI patient panel data puts Dr. Johnson's median patient age at 34, with 93% women.
Dr. Johnson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 34
Patient panel by sex, all payers
- Women93%
- Men6%
Source: Dmand AI Patient Panel Data
Dr. Katherine M. Johnson wrote 11 Medicare Part D claims in 2022
In 2022, Dr. Johnson wrote 11 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $87 in total drug cost. In 2021, CMS named 11 claims across 1 drug.
Dr. Johnson's most prescribed drugs by claims, 2022
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, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 112022: 11No change
Drugs named by CMS: 1 in 2022, 1 in 2021.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
How Dr. Katherine M. Johnson takes part in Medicare
Dr. Johnson 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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Dr. Katherine M. Johnson graduated from Harvard Medical School
Dr. Johnson graduated from Harvard Medical School in 2012.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Katherine M. Johnson'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 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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. Katherine M. Johnson
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. Katherine M. Johnson's NPI number?
Dr. Katherine M. Johnson's NPI number is 1134481880. It was assigned on June 8, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. Katherine M. Johnson?
Dr. Katherine M. Johnson is a maternal-fetal medicine specialist in Mendon, Massachusetts. The primary specialty in the NPI Registry is Maternal & Fetal Medicine Physician (taxonomy code 207VM0101X).
Where does Dr. Katherine M. Johnson practice?
Dr. Johnson practices at 55 North Ave, Mendon, MA 01756. Dr. Johnson's primary practice is Umass Memorial Medical Center in Mendon, Massachusetts. Dmand AI also links Dr. Johnson to 2 group practices and clinics and 2 medical groups.
What is Dr. Katherine M. Johnson's office phone number?
The practice phone on file for Dr. Johnson is (508) 334-1000.
What is Dr. Katherine M. Johnson's medical license number?
Dr. Johnson holds Massachusetts license 265750.
Which hospitals is Dr. Katherine M. Johnson affiliated with?
Dr. Johnson is affiliated with UMass Memorial Medical Center - University Campus.
What medical group is Dr. Katherine M. Johnson part of?
Dr. Johnson is linked to UMass Memorial Medical Group. Dmand AI links Dr. Johnson to 2 more medical groups.
Does Dr. Katherine M. Johnson accept Medicare?
Yes. CMS lists Dr. Johnson as accepting Medicare assignment.
Where did Dr. Katherine M. Johnson go to medical school?
Dr. Johnson graduated from Harvard Medical School in 2012.
What drugs does Dr. Katherine M. Johnson prescribe most?
In 2022 Medicare Part D data, Dr. Johnson's most prescribed drugs by claims were Oxycodone HCl.
How long has Dr. Katherine M. Johnson been practicing?
Dr. Johnson graduated from medical school in 2012, 14 years ago.
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