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Nicholas Johnson, FNP

  • O Fallon, MO
  • Family medicine physician
NPI1164309985PAC ID9335603851
Hospital affiliations
1
State license
1
Year NPI issued
2025
Practice locations
2
Practice address
615 New Ballas Road, Saint Louis, MO 63141
Practice phone
Call (314) 251-6000
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Mercy Hospital St. Louis

Hospital · Saint Louis, Missouri

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Nicholas Johnson is a family medicine physician in O Fallon, Missouri

Nicholas Johnson practices at Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy.

Nicholas Johnson's NPI, 1164309985, was assigned on August 21, 2025. Nicholas Johnson holds Missouri license 2019006383.

NPI and contact details
NPI
1164309985NPI Registry (opens in a new tab)
Medicare PAC ID
9335603851
NPI enumeration date
August 21, 2025
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(314) 251-6000
Professional email
Get email
Personal email
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Mobile number
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Sex
Male

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Nicholas Johnson practices in Saint Louis and O Fallon

Nicholas Johnson's primary practice is Mercy Hospital St. Louis, at 615 New Ballas Road, Saint Louis, MO 63141 in St. Louis County. The practice phone is (314) 251-6000. The NPI Registry lists Nicholas Johnson's practice address as 2223 Technology Dr, O Fallon, MO 63368.

  • Mercy Hospital St. LouisPrimary
    615 New Ballas Road, Saint Louis, MO 63141 · St. Louis CountyPhone(314) 251-6000
  • NPI Registry address
    2223 Technology Dr, O Fallon, MO 63368Phone(636) 561-5999

Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data

Nicholas Johnson is affiliated with 1 site of care

Nicholas Johnson's primary practice is Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy.

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Nicholas Johnson's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Nicholas Johnson practices. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Mercy Hospital St. LouisAvailable with a free account

Source: Dmand AI Technology Install Data

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Nicholas Johnson is one of 2,412 family medicine physicians in Missouri

Family medicine is Nicholas Johnson's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Nicholas Johnson is licensed in Missouri.

Specialties and state licenses

  • Family medicine, MissouriPrimaryLicense 2019006383 · taxonomy 207Q00000X

Family medicine physicians near Nicholas Johnson

Counts of family medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.

2,412family medicine physicians in Missouri14family medicine physicians in O Fallon110family medicine physicians at Mercy Hospital St. Louis

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Nicholas Johnson offers telehealth to Medicare patients

Nicholas Johnson accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Nicholas Johnson as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

Sources for Nicholas Johnson's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Nicholas Johnson

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Nicholas Johnson's NPI number?

Nicholas Johnson's NPI number is 1164309985. It was assigned on August 21, 2025, and it is active in the NPI Registry.

What does Nicholas Johnson specialize in?

Nicholas Johnson is a family medicine physician in O Fallon, Missouri. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).

Where does Nicholas Johnson practice?

Nicholas Johnson practices at 615 New Ballas Road, Saint Louis, MO 63141. Nicholas Johnson also practices at 2223 Technology Dr, O Fallon, MO 63368. Nicholas Johnson's primary practice is Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy.

What is Nicholas Johnson's office phone number?

The practice phone on file for Nicholas Johnson is (314) 251-6000.

What is Nicholas Johnson's medical license number?

Nicholas Johnson holds Missouri license 2019006383.

Which hospitals is Nicholas Johnson affiliated with?

Nicholas Johnson practices at Mercy Hospital St. Louis in Saint Louis, Missouri.

Does Nicholas Johnson accept Medicare?

Yes. CMS lists Nicholas Johnson as accepting Medicare assignment.

Does Nicholas Johnson offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Nicholas Johnson as offering telehealth services.

How long has Nicholas Johnson been practicing?

Nicholas Johnson's NPI was assigned in 2025.

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