Dr. Jacob N. Maciejewski, MD
- Industry payments
- $1,911
- Affiliated sites
- 2
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2008
- Practice address
- 1 Owens Corning Pkwy, Toledo, OH 43659
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Promedica Physicians Owens Corning - HOPD
Acute Care Hospital outpatient department · Toledo, Ohio
Find Dr. Maciejewski'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. Jacob N. Maciejewski is a pediatrician in Toledo, Ohio
Dr. Maciejewski practices at Promedica Physicians Owens Corning - HOPD in Toledo, Ohio.
Dr. Maciejewski's NPI, 1437313244, was assigned on July 11, 2008. Dr. Maciejewski holds Ohio license 35.093510.
- NPI
- 1437313244NPI Registry (opens in a new tab)
- NPI enumeration date
- July 11, 2008
- NPI status
- Active
- 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. Jacob N. Maciejewski practices at 2 locations in Toledo, Ohio
Dr. Maciejewski's primary practice is Promedica Physicians Owens Corning - HOPD, at 1 Owens Corning Pkwy, Toledo, OH 43659. Dr. Maciejewski also practices at ProMedica Central Physicians, 100 Madison Ave, Toledo, OH 43604.
- Promedica Physicians Owens Corning - HOPDPrimary1 Owens Corning Pkwy, Toledo, OH 43659
- ProMedica Central Physicians100 Madison Ave, Toledo, OH 43604 · Lucas CountyPhone(567) 585-1964
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Jacob N. Maciejewski is affiliated with 2 sites of care and 1 medical group
Dr. Maciejewski's primary practice is Promedica Physicians Owens Corning - HOPD in Toledo, Ohio. The medical group on file is ProMedica Physicians. Dmand AI also links Dr. Maciejewski to 1 more group practice or clinic, named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Jacob N. Maciejewski's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Maciejewski practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Promedica Physicians Owens Corning - HOPD | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jacob N. Maciejewski is one of 2,468 pediatricians in Ohio
Pediatrics is Dr. Maciejewski's primary specialty in the NPI Registry, under taxonomy code 208000000X. Dr. Maciejewski is licensed in Ohio.
Specialties and state licenses
- Pediatrics, OhioPrimary
Pediatricians near Dr. Maciejewski
Counts of pediatricians 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. Jacob N. Maciejewski's patients have a median age of 10
Across all payers, Dmand AI patient panel data puts Dr. Maciejewski's median patient age at 10, with 48% women.
Dr. Maciejewski's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 10
Patient panel by sex, all payers
- Women48%
- Men52%
Source: Dmand AI Patient Panel Data
Dr. Jacob N. Maciejewski received $1,911 in industry payments from 2016 to 2025
CMS Open Payments shows 107 general payments to Dr. Maciejewski from 21 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 96% of the total. GlaxoSmithKline, LLC. paid the most, $350.
General payments to Dr. Maciejewski by program year, 2016 to 2025
General payments to Dr. Maciejewski by kind, 2016 to 2025
- Food and beverage$1,83396%
- Education$633%
- Debt forgiveness$151%
Companies that paid Dr. Maciejewski the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Jacob N. Maciejewski'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 Affiliation DataDmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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 Dr. Jacob N. Maciejewski
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. Jacob N. Maciejewski's NPI number?
Dr. Jacob N. Maciejewski's NPI number is 1437313244. It was assigned on July 11, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Jacob N. Maciejewski?
Dr. Jacob N. Maciejewski is a pediatrician in Toledo, Ohio. The primary specialty in the NPI Registry is Pediatrics Physician (taxonomy code 208000000X).
Where does Dr. Jacob N. Maciejewski practice?
Dr. Maciejewski practices at 1 Owens Corning Pkwy, Toledo, OH 43659. Dr. Maciejewski also practices at 100 Madison Ave, Toledo, OH 43604. Dr. Maciejewski's primary practice is Promedica Physicians Owens Corning - HOPD in Toledo, Ohio. Dmand AI also links Dr. Maciejewski to 1 group practice or clinic.
What is Dr. Jacob N. Maciejewski's medical license number?
Dr. Maciejewski holds Ohio license 35.093510.
What medical group is Dr. Jacob N. Maciejewski part of?
Dr. Maciejewski is linked to ProMedica Physicians.
Has Dr. Jacob N. Maciejewski received payments from drug or device companies?
CMS Open Payments shows $1,911 in general payments to Dr. Maciejewski from 21 companies from 2016 to 2025. The largest total came from GlaxoSmithKline, LLC.
How long has Dr. Jacob N. Maciejewski been practicing?
Dr. Maciejewski's NPI was assigned in 2008.
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