DAVID ALAN JANSSEN M.D.
NPI 1700995339
Internal Medicine - Infectious Disease in O Fallon, MO

Q: What is David Janssen's NPI number?

The NPI number for David Janssen is 1700995339. It was assigned to this individual provider in the NPPES registry on August 29, 2006.

Q: What is David Janssen's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Q: When was this NPI record last updated?

The NPPES record for David Janssen was last updated on October 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since August 29, 2006PECOS EnrolledAccepts Medicare Assignment

20 PROGRESS POINT PKWY STE 206, O FALLON, MO 63368(636) 344-2014(314) 747-1476 Get Directions Write a Review

NPPES record last updated: October 21, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About David Alan Janssen M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DAVID ALAN JANSSEN M.D. (NPI 1700995339) is an individual infectious disease provider in O Fallon, Missouri, licensed in Missouri (208810309) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Parkland Health Center, and maintains a secondary practice location in St. Louis.

NPPES Registry Identity

NPI1700995339

Entity TypeIndividualMale

Primary Taxonomy207RI0200X

Provider Legal NameDAVID ALAN JANSSENCredential: M.D.

Location Address20 PROGRESS POINT PKWY STE 206O Fallon, MO 63368-2207

Mailing Address20 Progress Point Pkwy Ste 206O Fallon, MO 63368-2207 · (636) 344-2014 · Fax (314) 747-1476

Phone(636) 344-2014

Fax(314) 747-1476

Sole ProprietorNo

Medical School CMSIndiana University School Of MedicineGraduated 1988

Enumeration DateAugust 29, 2006

Last NPPES UpdateOctober 21, 2025

NPPES CertifiedOctober 21, 2025

✔ NPI 1700995339 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RI0200X

Licenses✔ Licensed in MO · 208810309✔ Licensed in IL · 036176531

Definition

An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.

Also ListedSpecialistTaxonomy 174400000X · License 103905 (MO)

20 PROGRESS POINT PKWY STE 206, O Fallon, MO 63368

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Secondary Practice Location 1

Location 1621 S. New Ballas Road, Suite 70 Tower BSt. Louis, MO 63141 · Phone (314) 251-5700 · Fax (314) 251-5703

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

David Alan Janssen M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3173622339

PECOS Enrollment IDI20100920000423, I20251031003877

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

394 services64 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

62 services57 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

52 services34 patients

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

33 services17 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

30 services21 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Parkland Health Center

Acute Care Hospitals · Farmington, MO

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number260163

Location1101 W LibertyFarmington, MO 63640 · St. Francois County

Emergency services Birthing friendly

Progress West Hospital

Acute Care Hospitals · O Fallon, MO

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number260219

Location2 Progress Point PkwyO Fallon, MO 63368 · St. Charles County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63368 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$128.28 typical visit price

range $55.65 – $169.38

Typical copayment $32.07 (range $13.91 – $42.34)

Most-billed visit code 99204

Established Patient

$98.37 typical visit price

range $17.76 – $137.92

Typical copayment $24.59 (range $4.44 – $34.48)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 18

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ELDAD SHAUL BIALECKI M.D.

Internal Medicine (Gastroenterology)