Robert L. Johnson, PA-C
- Medicare patients, 2024
- 14
- Part D claims, 2024
- 82
- Hospital affiliations
- 2
- Industry payments
- $44
- Medical groups
- 3
- Practice address
- 47601 Grand River Ave, Novi, MI 48374
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
St John Hospital and Medical Center - Assarian Cancer Center - HOPD
Acute Care Hospital outpatient department · Novi, Michigan
Find Robert Johnson's 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.
Robert L. Johnson is a physician assistant in Novi, Michigan
Robert Johnson practices at St John Hospital and Medical Center - Assarian Cancer Center - HOPD in Novi, Michigan.
Robert Johnson's NPI, 1578510541, was assigned on May 27, 2006.
- NPI
- 1578510541NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5799874426
- NPI enumeration date
- May 27, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Robert L. Johnson practices at St John Hospital and Medical Center - Assarian Cancer Center - HOPD in Novi, Michigan
Robert Johnson's primary practice is St John Hospital and Medical Center - Assarian Cancer Center - HOPD, at 47601 Grand River Ave, Novi, MI 48374.
- St John Hospital and Medical Center - Assarian Cancer Center - HOPD47601 Grand River Ave, Novi, MI 48374
Source: Dmand AI Affiliation Data
Robert L. Johnson is affiliated with 5 sites of care and 3 medical groups
Robert Johnson's primary practice is St John Hospital and Medical Center - Assarian Cancer Center - HOPD in Novi, Michigan. Robert Johnson is also affiliated with Corewell Health William Beaumont University Hospital. The medical group on file is Henry Ford Health Providence Hospital. Dmand AI also links Robert Johnson to 1 more hospital, 2 medical groups, 1 clinical lab and 1 group practice or clinic, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Robert L. Johnson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Robert Johnson practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| St John Hospital and Medical Center - Assarian Cancer Center - HOPD | Available with a free account |
| +4 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Robert L. Johnson is one of 5,857 physician assistants in Michigan
Physician assistant is Robert Johnson's primary specialty in the NPI Registry, under taxonomy code 363A00000X.
Specialties and state licenses
- Physician assistantPrimary
- Surgical physician assistant
- Medical physician assistant
Physician assistants near Robert Johnson
Counts of physician assistants 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
Robert L. Johnson treated 14 Medicare patients in 2024, average age 70
CMS counts 14 Medicare patients who saw Robert Johnson in 2024. The largest group is 85 and over, with 0 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 2.80, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Robert Johnson's median patient age at 68, with 24% women.
Robert Johnson's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Robert Johnson's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease75%
Share of Medicare patients with each condition. A patient can have several.
Robert Johnson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women24%
- Men76%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Robert L. Johnson wrote 82 Medicare Part D claims in 2024
In 2024, Robert Johnson wrote 82 Medicare Part D claims for 16 patients. 82% of them were for generic drugs.
Robert Johnson's Part D claims by kind of drug, 2024
- Generic67 claims82%
- Brand-name15 claims18%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Robert L. Johnson takes part in Medicare
Robert Johnson accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Robert L. Johnson received $44 in industry payments in 2025
CMS Open Payments shows 2 general payments to Robert Johnson from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Chiesi USA, Inc. paid the most, $44.
Companies that paid Robert Johnson the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Robert L. Johnson'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 Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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 Robert L. 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 Robert L. Johnson's NPI number?
Robert L. Johnson's NPI number is 1578510541. It was assigned on May 27, 2006, and it is active in the NPI Registry.
What does Robert L. Johnson specialize in?
Robert L. Johnson is a physician assistant in Novi, Michigan. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Robert L. Johnson practice?
Robert Johnson practices at 47601 Grand River Ave, Novi, MI 48374. Robert Johnson's primary practice is St John Hospital and Medical Center - Assarian Cancer Center - HOPD in Novi, Michigan. Dmand AI also links Robert Johnson to 1 hospital, 2 medical groups, 1 clinical lab and 1 group practice or clinic.
Which hospitals is Robert L. Johnson affiliated with?
Robert Johnson is affiliated with Corewell Health William Beaumont University Hospital. Dmand AI links Robert Johnson to 1 more hospital.
What medical group is Robert L. Johnson part of?
Robert Johnson is linked to Henry Ford Health Providence Hospital. Dmand AI links Robert Johnson to 2 more medical groups.
Does Robert L. Johnson accept Medicare?
Yes. CMS lists Robert Johnson as accepting Medicare assignment.
How many Medicare patients does Robert L. Johnson see?
CMS counts 14 Medicare patients who saw Robert Johnson in 2024, with an average age of 70.
Has Robert L. Johnson received payments from drug or device companies?
CMS Open Payments shows $44 in general payments to Robert Johnson from 1 company from 2025 to 2025. The largest total came from Chiesi USA, Inc.
How long has Robert L. Johnson been practicing?
Robert Johnson graduated from medical school in 1997, 29 years ago.
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