Dr. John B. Hammons, MD
- Hospital affiliations
- 2
- Industry payments
- $99
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 1015 Bowles, Fenton, MO 63026
- Practice phone
- Call (636) 496-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Hammons' 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 B. Hammons is an OB-GYN in Fenton, Missouri
Dr. Hammons practices at SSM Health St. Clare Hospital - Fenton in Fenton, Missouri, part of SSM Health Care.
Dr. Hammons' NPI, 1487601761, was assigned on May 30, 2006. Dr. Hammons holds Missouri license 2002015290.
- NPI
- 1487601761NPI Registry (opens in a new tab)
- NPI enumeration date
- May 30, 2006
- NPI status
- Active
- Practice phone
- (636) 496-2000
- 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. John B. Hammons practices at SSM Health St. Clare Hospital - Fenton in Fenton, Missouri
Dr. Hammons' primary practice is SSM Health St. Clare Hospital - Fenton, at 1015 Bowles, Fenton, MO 63026 in Jefferson County. The practice phone is (636) 496-2000.
- SSM Health St. Clare Hospital - Fenton1015 Bowles, Fenton, MO 63026 · Jefferson CountyPhone(636) 496-2000
Source: Dmand AI Affiliation Data
Dr. John B. Hammons is affiliated with 3 sites of care and 1 medical group
Dr. Hammons' primary practice is SSM Health St. Clare Hospital - Fenton in Fenton, Missouri, part of SSM Health Care. Dr. Hammons is also affiliated with Select Specialty Hospital - St. Louis. The medical group on file is SSM Health Medical Group. Dmand AI also links Dr. Hammons to 1 more hospital outpatient department, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John B. Hammons' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hammons practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| SSM Health St. Clare Hospital - Fenton | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John B. Hammons is one of 712 OB-GYNs in Missouri
Obstetrics and gynecology is Dr. Hammons' primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. Hammons is licensed in Missouri.
Specialties and state licenses
- Obstetrics and gynecology, MissouriPrimary
OB-GYNs near Dr. Hammons
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 B. Hammons' patients have a median age of 34
Across all payers, Dmand AI patient panel data puts Dr. Hammons' median patient age at 34, with 100% women.
Dr. Hammons' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 34
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. John B. Hammons received $99 in industry payments from 2019 to 2025
CMS Open Payments shows 2 general payments to Dr. Hammons from 2 drug and device companies from 2019 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $87.
General payments to Dr. Hammons by program year, 2019 to 2025
Companies that paid Dr. Hammons the most, 2019 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 B. Hammons'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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. John B. Hammons
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 B. Hammons' NPI number?
Dr. John B. Hammons' NPI number is 1487601761. It was assigned on May 30, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John B. Hammons?
Dr. John B. Hammons is an OB-GYN in Fenton, Missouri. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. John B. Hammons practice?
Dr. Hammons practices at 1015 Bowles, Fenton, MO 63026. Dr. Hammons' primary practice is SSM Health St. Clare Hospital - Fenton in Fenton, Missouri, part of SSM Health Care. Dmand AI also links Dr. Hammons to 1 hospital outpatient department.
What is Dr. John B. Hammons' office phone number?
The practice phone on file for Dr. Hammons is (636) 496-2000.
What is Dr. John B. Hammons' medical license number?
Dr. Hammons holds Missouri license 2002015290.
Which hospitals is Dr. John B. Hammons affiliated with?
Dr. Hammons practices at SSM Health St. Clare Hospital - Fenton in Fenton, Missouri. Dr. Hammons is also affiliated with Select Specialty Hospital - St. Louis.
What medical group is Dr. John B. Hammons part of?
Dr. Hammons is linked to SSM Health Medical Group.
Has Dr. John B. Hammons received payments from drug or device companies?
CMS Open Payments shows $99 in general payments to Dr. Hammons from 2 companies from 2019 to 2025. The largest total came from Abbvie Inc.
How long has Dr. John B. Hammons been practicing?
Dr. Hammons' NPI was assigned in 2006.
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