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DR. AMOS CHARLES JOHNSON M.D.
NPI 1801805270
Internal Medicine in Southfield, MI

Active since August 05, 2006PECOS EnrolledAccepts Medicare Assignment
29877 TELEGRAPH RD STE 300, SOUTHFIELD, MI 48034(248) 827-4322(248) 827-7822 Get Directions Write a Review

NPPES record last updated: April 3, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Amos Charles Johnson M.d. NPPES

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

DR. AMOS CHARLES JOHNSON M.D. (NPI 1801805270) is an individual internal medicine provider in Southfield, Michigan, licensed in Michigan (AJ051658) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Northwestern Medicine Central Dupage Hospital, and is a graduate of Wayne State University School Of Medicine (1987).

NPPES Registry Identity

NPI1801805270
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. AMOS CHARLES JOHNSONCredential: M.D.
Location Address29877 TELEGRAPH RD STE 300Southfield, MI 48034-7660
Mailing Address29877 Telegraph Rd Ste 300Southfield, MI 48034-7660 · (248) 827-4322 · Fax (248) 827-7822
Phone(248) 827-4322
Fax(248) 827-7822
Sole ProprietorYes
Medical School CMSWayne State University School Of MedicineGraduated 1987
Enumeration DateAugust 5, 2006
Last NPPES UpdateApril 3, 2025
NPPES CertifiedApril 3, 2025
✔ NPI 1801805270 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MI · AJ051658
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.
29877 TELEGRAPH RD STE 300, Southfield, MI 48034
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health and more.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

Dr. Amos Charles Johnson 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 ID8325083876
PECOS Enrollment IDI20050624000259
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 Amos Johnson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Farmington Hills Internal Medicine PC
Same address
Internal Medicine
29877 TELEGRAPH RD STE 300
Southfield, MI 48034
  • Reassigned Medicare billing, Michigan enrollment
NPI 1891957965 (248) 827-4322

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 7

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.

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.
221 services36 patients
Blood glucose (sugar) test performed by hand-held instrument 82962
A blood glucose test uses a handheld device to measure the amount of sugar in your blood. A small prick on your finger allows a drop of blood to be placed on a test strip, which is then read by the device. This helps monitor and manage diabetes effectively.
115 services30 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
44 services26 patients
Hemoglobin a1c level 83036
Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.
39 services28 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
31 services17 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000
An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.
23 services20 patients

Hospital Affiliations CMS Care Compare

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

Northwestern Medicine Central Dupage Hospital

Acute Care Hospitals · Winfield, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140242
Location25 North Winfield RoadWinfield, IL 60190 · Du Page County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 48034 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
$134.28 typical visit price
range $58.04 – $177.36
Typical copayment $33.57 (range $14.51 – $44.34)
Most-billed visit code 99204
Established Patient
$102.35 typical visit price
range $18.32 – $143.49
Typical copayment $25.58 (range $4.58 – $35.87)
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.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
7 suppliers16 claims27 services$6.37 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES

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

FARMINGTON HILLS INTERNAL MEDICINE PC
Internal Medicine
29877 TELEGRAPH RD STE 300
SOUTHFIELD, MI 48034
Oakland County (248) 827-4322

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 Amos Johnson's NPI number?

The NPI number for Amos Johnson is 1801805270. It was assigned to this individual provider in the NPPES registry on August 5, 2006.

Where is Amos Johnson located?

Amos Johnson practices at 29877 Telegraph Rd Ste 300, Southfield, MI 48034. The listed phone number is (248) 827-4322.

What is Amos Johnson's specialty?

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

Is Amos Johnson enrolled in Medicare?

Yes. Amos Johnson 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 Amos Johnson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Amos Johnson reassigns Medicare benefits to Farmington Hills Internal Medicine PC (Southfield, MI). 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 Amos Johnson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Amos Johnson accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian and Priority Health list Amos Johnson 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 Amos Johnson affiliated with any hospitals?

According to CMS data, Amos Johnson is affiliated with Northwestern Medicine Central Dupage Hospital.

When was this NPI record last updated?

The NPPES record for Amos Johnson was last updated on April 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.