Dr. Alexander Matthew Holtz, MD, PhD
- Hospital affiliations
- 1
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2017
- Practice address
- 9 Hope Ave, Waltham, MA 02453
- Practice phone
- Call (617) 355-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Children's Hospital Pediatric Associates, Inc
Waltham, Massachusetts
Find Dr. Holtz'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 Matthew Holtz is a clinical genetics (m.d.) physician in Waltham, Massachusetts
Dr. Holtz practices at Children's Hospital Pediatric Associates, Inc in Waltham, Massachusetts.
Dr. Holtz's NPI, 1942741293, was assigned on March 19, 2017. Dr. Holtz graduated from University of Michigan Medical School in 2017. Dr. Holtz holds Massachusetts license 294346.
- NPI
- 1942741293NPI Registry (opens in a new tab)
- NPI enumeration date
- March 19, 2017
- NPI status
- Active
- Practice phone
- (617) 355-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Alexander Matthew Holtz practices at Children's Hospital Pediatric Associates, Inc in Waltham, Massachusetts
Dr. Holtz's primary practice is Children's Hospital Pediatric Associates, Inc, at 9 Hope Ave, Waltham, MA 02453 in Middlesex County. The practice phone is (617) 355-6000.
- Children's Hospital Pediatric Associates, Inc9 Hope Ave, Waltham, MA 02453 · Middlesex CountyPhone(617) 355-6000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Alexander Matthew Holtz is affiliated with 2 sites of care and 1 medical group
Dr. Holtz's primary practice is Children's Hospital Pediatric Associates, Inc in Waltham, Massachusetts. Dr. Holtz is also affiliated with Boston Children's Hospital. The medical group on file is Boston Children's Hospital.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Alexander Matthew Holtz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Holtz practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Children's Hospital Pediatric Associates, Inc | 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. Alexander Matthew Holtz is one of 52 clinical genetics (m.d.) physicians in Massachusetts
Clinical genetics (m.d.) is Dr. Holtz's primary specialty in the NPI Registry, under taxonomy code 207SG0201X. Dr. Holtz is licensed in Massachusetts.
Specialties and state licenses
- Clinical genetics (m.d.), MassachusettsPrimary
Clinical genetics (m.d.) physicians near Dr. Holtz
Counts of clinical genetics (m.d.) physicians 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 Matthew Holtz's patients have a median age of 7
Across all payers, Dmand AI patient panel data puts Dr. Holtz's median patient age at 7, with 55% women.
Dr. Holtz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 7
Patient panel by sex, all payers
- Women55%
- Men45%
Source: Dmand AI Patient Panel Data
Dr. Alexander Matthew Holtz graduated from University of Michigan Medical School
Dr. Holtz graduated from University of Michigan Medical School in 2017.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Alexander Matthew Holtz'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 DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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. Alexander Matthew Holtz
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What is Dr. Alexander Matthew Holtz's NPI number?
Dr. Alexander Matthew Holtz's NPI number is 1942741293. It was assigned on March 19, 2017, and it is active in the NPI Registry.
What kind of doctor is Dr. Alexander Matthew Holtz?
Dr. Alexander Matthew Holtz is a clinical genetics (m.d.) physician in Waltham, Massachusetts. The primary specialty in the NPI Registry is Clinical Genetics (M.D.) Physician (taxonomy code 207SG0201X).
Where does Dr. Alexander Matthew Holtz practice?
Dr. Holtz practices at 9 Hope Ave, Waltham, MA 02453. Dr. Holtz's primary practice is Children's Hospital Pediatric Associates, Inc in Waltham, Massachusetts.
What is Dr. Alexander Matthew Holtz's office phone number?
The practice phone on file for Dr. Holtz is (617) 355-6000.
What is Dr. Alexander Matthew Holtz's medical license number?
Dr. Holtz holds Massachusetts license 294346.
Which hospitals is Dr. Alexander Matthew Holtz affiliated with?
Dr. Holtz is affiliated with Boston Children's Hospital.
What medical group is Dr. Alexander Matthew Holtz part of?
Dr. Holtz is linked to Boston Children's Hospital.
Where did Dr. Alexander Matthew Holtz go to medical school?
Dr. Holtz graduated from University of Michigan Medical School in 2017.
How long has Dr. Alexander Matthew Holtz been practicing?
Dr. Holtz graduated from medical school in 2017, 9 years ago.
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