NPPES file of Aug 9, 2026

Katharine Ella Calder, PA-C

Medical Physician Assistant · Traverse City, MI

Katharine Ella Calder, PA-C is a medical physician assistant with a practice address in Traverse City, Michigan, and NPI 1851833198, issued on Nov 16, 2016. Check the license with the Michigan board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1851833198
Name
Katharine Ella Calder
Credential
PA-C
Primary taxonomy
Medical Physician Assistant 363AM0700X
Practice location
1105 6TH St, Traverse City, MI 49684
Phone
(231) 947-0673
Enumerated
Nov 16, 2016
Record last updated
Mar 12, 2024
Fax
(801) 740-2847
Medicare enrollment
Enrolled (PECOS I20170217000081); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1105 6TH St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Asante Acheampong, PHARMDPharmacist1063152353
  2. Troy Ahlstrom, M.D.Internal Medicine Physician1548265911
  3. Sally Ancel, D.O.Emergency Medicine Physician1811000466
  4. Kyrsten Austin, MS, RDRegistered Dietitian1609649037
  5. Janet Baillod, MSN, NPNurse Practitioner1063586352
  6. Brooke Baker, DPTPhysical Therapist1992274021

Verify Katharine Ella Calder in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Michigan board licenses this professionCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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89% fewer Medicare Part D claims than the average medical physician assistant in 2024

123 Medicare Part D claims for 102 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. 11 claims were for opioids.

  1. Katharine Calder123
  2. Specialty average1,148

Most prescribed

  1. Cephalexin25 claims
  2. Amoxicillin-Clavulanate Potass12 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

One hospital affiliation

  1. Munson Medical CenterTraverse City, MI · Acute Care Hospitals4 of 5 stars

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Katharine Ella Calder among 1,140 medical physician assistant records in Michigan

Katharine Ella Calder, PA-C is one of 1,140 medical physician assistant records with a practice address in Michigan. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 69% of them.

  • NPI issued2016 · 69% of these records are older, 27% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 54% of these records are
  • Graduated2016 · median 2012 among the 613 with a school on file
  • Record last updated2024 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Medical Physician Assistant providers in Michigan

There are 1,140 medical physician assistant records in Michigan.

The 8 medical physician assistant records with the nearest ZIP codes

  1. Jeffrey Arbour, P.A.Traverse City, MI 496841033138771
  2. James Berg, PATraverse City, MI 496841962442251
  3. Douglas Coffin, PA-CTraverse City, MI 496841689615155
  4. Suzanne Coffin, P.A.Traverse City, MI 496841164598835
  5. Kurt Crosby, PATraverse City, MI 496841720083801
  6. Kirsten Crosby, PA-CTraverse City, MI 496841548258965
  7. Mary Douglas, PACTraverse City, MI 496841114928637
  8. Michael Howard, PATraverse City, MI 496841487659165

Common questions

What is Katharine Ella Calder, PA-C's NPI number?

Katharine Ella Calder, PA-C's National Provider Identifier (NPI) is 1851833198, issued on Nov 16, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Katharine Ella Calder, PA-C located?

The NPPES record lists a practice address at 1105 6TH St, Traverse City, MI, 49684. Phone: (231) 947-0673. Providers update this record themselves, so call before visiting.

How can I verify Katharine Ella Calder, PA-C's license?

Search the Michigan board that licenses this profession; the NPPES record confirms identity only.

How much does Katharine Ella Calder, PA-C prescribe under Medicare Part D?

In 2024, Katharine Ella Calder, PA-C had 123 Medicare Part D claims for 102 beneficiaries; the average among medical physician assistant prescribers was 1,148. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.