Dr. John Rees, MD
- Publications
- 5
- Industry payments
- $39
- State license
- 1
- Year NPI issued
- 2024
- Practice address
- 3400 Spruce St, Philadelphia, PA 19104-4238
- Practice phone
- Call (215) 662-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Rees' 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. John Rees is an OB-GYN in Philadelphia, Pennsylvania
Dr. Rees practices in Philadelphia, Pennsylvania.
Dr. Rees' NPI, 1952151706, was assigned on March 25, 2024. Dr. Rees holds Pennsylvania license MT231670.
- NPI
- 1952151706NPI Registry (opens in a new tab)
- NPI enumeration date
- March 25, 2024
- NPI status
- Active
- Practice phone
- (215) 662-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. John Rees' practice address is in Philadelphia, Pennsylvania
Dr. Rees' practice address in the NPI Registry is 3400 Spruce St, Philadelphia, PA 19104-4238. The practice phone is (215) 662-4000.
- NPI Registry address3400 Spruce St, Philadelphia, PA 19104-4238Phone(215) 662-4000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. John Rees' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Rees practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Rees' practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Rees is one of 1,573 OB-GYNs in Pennsylvania
Obstetrics and gynecology is Dr. Rees' primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. Rees is licensed in Pennsylvania.
Specialties and state licenses
- Obstetrics and gynecology, PennsylvaniaPrimary
OB-GYNs near Dr. Rees
Counts of OB-GYNs 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. John Rees' patients have a median age of 33
Across all payers, Dmand AI patient panel data puts Dr. Rees' median patient age at 33, with 86% women.
Dr. Rees' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 33
Patient panel by sex, all payers
- Women86%
- Men14%
Source: Dmand AI Patient Panel Data
Dr. John Rees has 5 publications on record
Dmand AI links 5 papers to Dr. Rees, published from 2022 to 2025. 2024 was the busiest year, with 2. Dr. Rees' most frequent co-authors are Yuli Y. Kim, MD, Ryan P. Dumas, MD and Daniel Norman Holena, MD.
Dr. Rees' papers by year, 2022 to 2025
Dr. Rees' most frequent co-authors
Recent publications by Dr. Rees
Am J Obstet Gynecol
J Clin Endocrinol Metab
See who Dr. Rees researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Rees works with, so you can find a warm path to the right OB-GYNs.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. John Rees received $39 in industry payments in 2025
CMS Open Payments shows 1 general payment to Dr. Rees from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Baxter Healthcare paid the most, $39.
Companies that paid Dr. Rees the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. John Rees'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 |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. John Rees
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. John Rees' NPI number?
Dr. John Rees' NPI number is 1952151706. It was assigned on March 25, 2024, and it is active in the NPI Registry.
What kind of doctor is Dr. John Rees?
Dr. John Rees is an OB-GYN in Philadelphia, Pennsylvania. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. John Rees practice?
Dr. Rees practices at 3400 Spruce St, Philadelphia, PA 19104-4238.
What is Dr. John Rees' office phone number?
The practice phone on file for Dr. Rees is (215) 662-4000.
What is Dr. John Rees' medical license number?
Dr. Rees holds Pennsylvania license MT231670.
Has Dr. John Rees received payments from drug or device companies?
CMS Open Payments shows $39 in general payments to Dr. Rees from 1 company from 2025 to 2025. The largest total came from Baxter Healthcare.
How long has Dr. John Rees been practicing?
Dr. Rees' NPI was assigned in 2024.
Does Dr. John Rees do research?
Dmand AI links 5 publications to Dr. Rees, published from 2022 to 2025.
Who does Dr. John Rees publish with?
Dr. Rees' most frequent co-authors are Yuli Y. Kim, MD (2 shared papers), Ryan P. Dumas, MD (1 shared paper) and Daniel Norman Holena, MD (1 shared paper).
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