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NATHANIEL ADAMS MD
NPI 1548838535
Internal Medicine in Hazelwood, MO

Active since June 15, 2021PECOS EnrolledAccepts Medicare Assignment
637 DUNN RD STE 170, HAZELWOOD, MO 63042(636) 838-5702 Get Directions Write a Review

NPPES record last updated: January 6, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jan 6, 2025, Jul 30, 2024, Jul 25, 2024 and 1 more (4 updates tracked since 2021).

About Nathaniel Adams Md NPPES

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

NATHANIEL ADAMS MD (NPI 1548838535) is an individual internal medicine provider in Hazelwood, Missouri, licensed in Missouri (2023006977) and active in the NPI registry since June 2021. He is enrolled in Medicare PECOS, is affiliated with Ssm St Joseph Health Center, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1548838535
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameNATHANIEL ADAMSCredential: MD
Location Address637 DUNN RD STE 170Hazelwood, MO 63042-1759
Mailing AddressPo Box 419052Saint Louis, MO 63141-9052 · (314) 851-1000
Phone(636) 838-5702
Sole ProprietorNo
Medical School CMSWashington University School Of MedicineGraduated 2021
Enumeration DateJune 15, 2021
Last NPPES UpdateJanuary 6, 20254 updates tracked since enumeration
NPPES CertifiedJanuary 6, 2025
✔ NPI 1548838535 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MO · 2023006977
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
637 DUNN RD STE 170, Hazelwood, MO 63042
Open in Google Maps ↗

Secondary Practice Locations 2

Location 11551 Wall St Ste 400Saint Charles, MO 63303-3541 · Phone (636) 669-7006 · Fax (636) 669-7008
Location 21551 Wall St Ste 410Saint Charles, MO 63303-3541 · Phone (314) 838-5702 · Fax (314) 839-5596

Accepted Insurance

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

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Nathaniel Adams Md 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 ID8123417797
PECOS Enrollment IDI20240627001007
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.

Medicare Billing Reassignment

Medicare enrollment records show Nathaniel Adams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

American Multispecialty Group Inc.
12 mi
Internal Medicine
555 MARYVILLE UNIVERSITY DR STE 240
Saint Louis, MO 63141
  • Reassigned Medicare billing, Missouri enrollment
  • 119 clinicians in this Medicare group
NPI 1972559532 (314) 851-1000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 8

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.

Insertion of needle into vein for collection of blood sample 36415
This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
31 services26 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.
29 services23 patients
Blood test, lipids (cholesterol and triglycerides) 80061
A lipid panel is a blood test that measures fats and fatty substances, such as cholesterol and triglycerides. These substances are used by your body as a source of energy. High levels can lead to health issues, including heart disease.
18 services18 patients
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count 85025
A Complete Blood Cell Count is a common test that measures various components of the blood, including red cells (carry oxygen), white cells (fight infection), and platelets (help blood clot). An automated test ensures accuracy. The differential count provides detailed information about white cell types.
17 services16 patients
Blood test, comprehensive group of blood chemicals 80053
A comprehensive group of blood chemicals test, also known as a comprehensive metabolic panel, is a blood test that measures your sugar level, electrolyte and fluid balance, kidney function, and liver function. This helps to check your body's overall health.
16 services16 patients
Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
16 services16 patients

Hospital Affiliations CMS Care Compare 4

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

Ssm St Joseph Health Center

Acute Care Hospitals · Saint Charles, MO
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260005
Location300 1st Capitol DrSaint Charles, MO 63301 · St. Charles County
Emergency services

Mercy Hospital St Louis

Acute Care Hospitals · Saint Louis, MO
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260020
Location615 New Ballas RoadSaint Louis, MO 63141 · St. Louis County
Emergency services Birthing friendly

Ssm Health Depaul Hospital St Louis

Acute Care Hospitals · Bridgeton, MO
2/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number260104
Location12303 Depaul DriveBridgeton, MO 63044 · St. Louis County
Emergency services Birthing friendly

Missouri Baptist Medical Center

Acute Care Hospitals · Town And Country, MO
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260108
Location3015 N Ballas RdTown And Country, MO 63131 · St. Louis County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63042 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 12

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

ERIN RICE FICK D.O.
Internal Medicine
637 DUNN RD STE 170
HAZELWOOD, MO 63042
St. Louis County (314) 838-5702
ERIN VONTZ MS, RD, LD, CDE
Dietitian, Registered
637 DUNN RD STE 170
HAZELWOOD, MO 63042
St. Louis County (314) 838-5702
JOYCE BOEHMER M.D.
Internal Medicine
637 DUNN RD STE 170
HAZELWOOD, MO 63042
St. Louis County (314) 838-5702
SCOTT ANDERSON M.D.
Internal Medicine
637 DUNN RD STE 170
HAZELWOOD, MO 63042
St. Louis County (314) 838-5702
MARIE E. CAMPAGNA M.D.
Internal Medicine
637 DUNN RD STE 170
HAZELWOOD, MO 63042
St. Louis County (314) 838-5702
CARLA MOORE BECKERLE ANP
Nurse Practitioner
637 DUNN RD STE 170
HAZELWOOD, MO 63042
St. Louis County (314) 838-5702
JULIE KATHLEEN MACPHEE M.D.
Internal Medicine
637 DUNN RD STE 170
HAZELWOOD, MO 63042
St. Louis County (314) 838-5702
BETHANY M STERN FNP
Nurse Practitioner (Family)
637 DUNN RD STE 170
HAZELWOOD, MO 63042
St. Louis County (314) 838-5702

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Nathaniel Adams's NPI number?

The NPI number for Nathaniel Adams is 1548838535. It was assigned to this individual provider in the NPPES registry on June 15, 2021.

Where is Nathaniel Adams located?

Nathaniel Adams practices at 637 Dunn Rd Ste 170, Hazelwood, MO 63042. The listed phone number is (636) 838-5702.

What is Nathaniel Adams's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Nathaniel Adams enrolled in Medicare?

Yes. Nathaniel Adams is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Nathaniel Adams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nathaniel Adams reassigns Medicare benefits to American Multispecialty Group Inc. (Saint Louis, MO). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Nathaniel Adams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Nathaniel Adams accept?

Health plans from Anthem Blue Cross and Blue Shield, Medica and UnitedHealthcare list Nathaniel Adams as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Nathaniel Adams affiliated with any hospitals?

According to CMS data, Nathaniel Adams is affiliated with Ssm St Joseph Health Center, Mercy Hospital St Louis, Ssm Health Depaul Hospital St Louis and Missouri Baptist Medical Center.

When was this NPI record last updated?

The NPPES record for Nathaniel Adams was last updated on January 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 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.