Dr. Alexander Jonas Liwag, MD
- Industry payments
- $597
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 76 Stirling Rd, Warren, NJ 07059
- Practice phone
- Call (908) 755-5437
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Watchung Pediatrics
Warren, New Jersey
Find Dr. Liwag'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. Alexander Jonas Liwag is a pediatrician in Warren, New Jersey
Dr. Liwag practices at Watchung Pediatrics in Warren, New Jersey.
Dr. Liwag's NPI, 1235102575, was assigned on February 8, 2006. Dr. Liwag holds New Jersey license 25MA07966900.
- NPI
- 1235102575NPI Registry (opens in a new tab)
- NPI enumeration date
- February 8, 2006
- NPI status
- Active
- Practice phone
- (908) 755-5437
- 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 Practice Data
Dr. Alexander Jonas Liwag practices at Watchung Pediatrics in Warren, New Jersey
Dr. Liwag's primary practice is Watchung Pediatrics, at 76 Stirling Rd, Warren, NJ 07059 in Somerset County. The practice phone is (908) 755-5437.
- Watchung Pediatrics76 Stirling Rd, Warren, NJ 07059 · Somerset CountyPhone(908) 755-5437
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Alexander Jonas Liwag is affiliated with 2 sites of care and 1 medical group
Dr. Liwag's primary practice is Watchung Pediatrics in Warren, New Jersey. Dmand AI also links Dr. Liwag to 1 group practice or clinic and 1 medical group, 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. Alexander Jonas Liwag's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Liwag practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Watchung Pediatrics | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Alexander Jonas Liwag is one of 1,923 pediatricians in New Jersey
Pediatrics is Dr. Liwag's primary specialty in the NPI Registry, under taxonomy code 208000000X. Dr. Liwag is licensed in New Jersey.
Specialties and state licenses
- Pediatrics, New JerseyPrimary
Pediatricians near Dr. Liwag
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. Alexander Jonas Liwag's patients have a median age of 13
Across all payers, Dmand AI patient panel data puts Dr. Liwag's median patient age at 13, with 45% women.
Dr. Liwag's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 13
Patient panel by sex, all payers
- Women45%
- Men54%
Source: Dmand AI Patient Panel Data
Dr. Alexander Jonas Liwag received $597 in industry payments from 2016 to 2021
CMS Open Payments shows 40 general payments to Dr. Liwag from 11 drug and device companies from 2016 to 2021. Food and beverage make up the largest share, 100% of the total. Pfizer Inc. paid the most, $152.
General payments to Dr. Liwag by program year, 2016 to 2021
Companies that paid Dr. Liwag the most, 2016 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Alexander Jonas Liwag'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 |
| 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. Alexander Jonas Liwag
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. Alexander Jonas Liwag's NPI number?
Dr. Alexander Jonas Liwag's NPI number is 1235102575. It was assigned on February 8, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Alexander Jonas Liwag?
Dr. Alexander Jonas Liwag is a pediatrician in Warren, New Jersey. The primary specialty in the NPI Registry is Pediatrics Physician (taxonomy code 208000000X).
Where does Dr. Alexander Jonas Liwag practice?
Dr. Liwag practices at 76 Stirling Rd, Warren, NJ 07059. Dr. Liwag's primary practice is Watchung Pediatrics in Warren, New Jersey. Dmand AI also links Dr. Liwag to 1 group practice or clinic and 1 medical group.
What is Dr. Alexander Jonas Liwag's office phone number?
The practice phone on file for Dr. Liwag is (908) 755-5437.
What is Dr. Alexander Jonas Liwag's medical license number?
Dr. Liwag holds New Jersey license 25MA07966900.
Has Dr. Alexander Jonas Liwag received payments from drug or device companies?
CMS Open Payments shows $597 in general payments to Dr. Liwag from 11 companies from 2016 to 2021. The largest total came from Pfizer Inc.
How long has Dr. Alexander Jonas Liwag been practicing?
Dr. Liwag's NPI was assigned in 2006.
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