Joshua Mark Baker, PA
Physician Assistant · Wauwatosa, WI
Joshua Mark Baker, PA is a physician assistant with a practice address in Wauwatosa, Wisconsin, and NPI 1467014514, issued on Jun 28, 2019. Check the license (Wisconsin 4735-23, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Joshua Mark Baker
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 4735-23 WI
Self-reported in NPPES; status is on the state search - Practice location
- 3077 N Mayfair RD Ste 305, Wauwatosa, WI 53222
- Phone
- (414) 643-4027
- Enumerated
- Jun 28, 2019
- Record last updated
- Jun 28, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20190816002924); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 3,475 in Wisconsin → Look up another NPI →
Also registered at 3077 N Mayfair RD Ste 305
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Janet Jasniewski, N.P.Nurse Practitioner1689643579
- Nicholas Julga, PA-CSurgical Physician Assistant1174505333
- Laura Oldenburg, PAPhysician Assistant1104920107
Verify Joshua Mark Baker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 4735-23Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
61% fewer Medicare Part D claims than the average physician assistant in 2024
326 Medicare Part D claims for 159 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 188 claims were for opioids.
Most prescribed
- Oxycodone-Acetaminophen92 claims
- Cephalexin74 claims
- Tramadol Hcl58 claims
- Hydrocodone-Acetaminophen36 claims
- Methylprednisolone21 claims
- Celecoxib12 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 81.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $106.46
1 payment: food and beverage; the largest payer was Ensemble Orthopedics, Inc. The 64,719 providers of this specialty with any payment received $841.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Midwest Orthopedic Specialty Hospital, LLCFranklin, WI
- Orthopedic Surgeons OF Wisconsin SCFranklin, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joshua Mark Baker among 3,475 physician assistant records in Wisconsin
Joshua Mark Baker, PA is one of 3,475 physician assistant records with a practice address in Wisconsin. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 66% of them.
- NPI issued2019 · 66% of these records are older, 30% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2019 · median 2016 among the 2,491 with a school on file
- Record last updated2019 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
82 physician assistant records list a practice address in Wauwatosa
They are 82 of the 1,787 NPPES records with a practice address in Wauwatosa, and 3,475 physician assistant records in Wisconsin.
All 3,475 in Wisconsin → Every provider in Wauwatosa → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Mallorie Bergstrom, PA-CWauwatosa, WI 532221730490012
- Kristen Dudas, PA-CWauwatosa, WI 532221376679092
- Hillary Hinkson, PA-CMilwaukee, WI 532221053403766
- Jake Hobbs, PAWauwatosa, WI 532221669889069
- Molly Hodges, PAWauwatosa, WI 532221245711217
- Ellen Ketter, PA-CWauwatosa, WI 532221942653480
- Kelsey Lechusz, PA-CWauwatosa, WI 532221922490200
- Benjamin Lehrer, PA-CWauwatosa, WI 532221033697511
Common questions
What is Joshua Mark Baker, PA's NPI number?
Joshua Mark Baker, PA's National Provider Identifier (NPI) is 1467014514, issued on Jun 28, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Joshua Mark Baker, PA located?
The NPPES record lists a practice address at 3077 N Mayfair RD Ste 305, Wauwatosa, WI, 53222. Phone: (414) 643-4027. Providers update this record themselves, so call before visiting.
How can I verify Joshua Mark Baker, PA's license?
NPPES lists Wisconsin license number 4735-23, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Joshua Mark Baker, PA prescribe under Medicare Part D?
In 2024, Joshua Mark Baker, PA had 326 Medicare Part D claims for 159 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Joshua Mark Baker, PA's MIPS final score?
The 2023 MIPS final score is 81.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.