Dr. Peter Benjamin Spencer, DO
- Medicare services, 2024
- 686
- Medicare patients, 2024
- 327
- Part D claims, 2024
- 3,344
- Hospital affiliations
- 2
- Industry payments
- $2,278
- Practice address
- 1234 Napier Avenue, Saint Joseph, MI 49085
- Practice phone
- Call (269) 983-8300
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Spencer'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.
Dr. Peter Benjamin Spencer is a neurologist in Saint Joseph, Michigan
Dr. Spencer practices at Corewell Health Lakeland Hospitals - Saint Joseph Hospital in Saint Joseph, Michigan, part of Corewell Health.
Dr. Spencer's NPI, 1669479432, was assigned on July 7, 2005. Dr. Spencer graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 1989. Dr. Spencer holds Michigan license 5101010692.
- NPI
- 1669479432NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9032234794
- NPI enumeration date
- July 7, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (269) 983-8300
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 63
- Medical school graduation
- 1989
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Peter Benjamin Spencer practices at Corewell Health Lakeland Hospitals - Saint Joseph Hospital in Saint Joseph, Michigan
Dr. Spencer's primary practice is Corewell Health Lakeland Hospitals - Saint Joseph Hospital, at 1234 Napier Avenue, Saint Joseph, MI 49085 in Berrien County. The practice phone is (269) 983-8300.
- Corewell Health Lakeland Hospitals - Saint Joseph Hospital1234 Napier Avenue, Saint Joseph, MI 49085 · Berrien CountyPhone(269) 983-8300
Source: Dmand AI Affiliation Data
Dr. Peter Benjamin Spencer is affiliated with 3 sites of care and 2 medical groups
Dr. Spencer's primary practice is Corewell Health Lakeland Hospitals - Saint Joseph Hospital in Saint Joseph, Michigan, part of Corewell Health. Dr. Spencer is also affiliated with Corewell Health Watervliet Hospital. The medical group on file is Corewell Health Medical Group South. Dmand AI also links Dr. Spencer to 1 more group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Peter Benjamin Spencer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Spencer practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Corewell Health Lakeland Hospitals - Saint Joseph Hospital | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Peter Benjamin Spencer is one of 642 neurologists in Michigan
Neurology is Dr. Spencer's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dr. Spencer is licensed in Michigan.
Specialties and state licenses
- Neurology, MichiganPrimary
Neurologists near Dr. Spencer
Counts of neurologists 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
Dr. Peter Benjamin Spencer billed Medicare for 686 services in 2024
CMS data shows 686 Medicare services from Dr. Spencer across 6 procedure codes in 2024, for 327 Medicare patients. Medicare paid $44,411 for them. Every service was in an office.
Dr. Spencer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 7852024: 63120%
- Tests and treatments
- 2023: 902024: 5539%
Dr. Spencer compared with the Michigan median for neurologists, 2024
- Dr. Spencer
- Michigan median
- Medicare services
- 686vs 2702.5 times
- Medicare patients
- 327vs 16895% above
- Part D claims
- 3,101vs 4167.5 times
Medians across 602 neurologists in Michigan with Dmand AI profiles that report each measure.
Dr. Spencer's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Peter Benjamin Spencer treated 327 Medicare patients in 2024, average age 74
CMS counts 327 Medicare patients who saw Dr. Spencer in 2024. The largest group is 75 to 84, with 119 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 14% are also on Medicaid. Their average risk score is 1.42, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Spencer's median patient age at 65, with 63% women.
Dr. Spencer's Medicare patients by age, 2024
Dr. Spencer's Medicare patients by sex, 2024
- Women18557%
- Men14243%
Chronic conditions among Dr. Spencer's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis51%
- Diabetes32%
- Chronic kidney disease31%
- Mood disorders29%
- Depression27%
- Anxiety26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Spencer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women63%
- Men36%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Peter Benjamin Spencer wrote 3,344 Medicare Part D claims in 2024
In 2024, Dr. Spencer wrote 3,344 Medicare Part D claims for 519 patients. 94% of them were for generic drugs. CMS names the drug for 3,101 of them, across 52 drugs with 11 or more claims each, at $525,363 in total drug cost. In 2023, CMS named 3,350 claims across 59 drugs.
Dr. Spencer's Part D claims by kind of drug, 2024
- Generic3,134 claims94%
- Brand-name and other210 claims6%
Dr. Spencer's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Spencer's Part D claims, 2024
- Opioids1%42 of 3,344 claims
- Antipsychotics, patients 65 and over1%26 of 3,344 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3,3502024: 3,1017%
Drugs named by CMS: 52 in 2024, 59 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Peter Benjamin Spencer offers telehealth to Medicare patients
Dr. Spencer accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Spencer as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Peter Benjamin Spencer received $2,278 in industry payments from 2016 to 2025
CMS Open Payments shows 139 general payments to Dr. Spencer from 36 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. Abbvie Inc. paid the most, $566.
General payments to Dr. Spencer by program year, 2016 to 2025
General payments to Dr. Spencer by kind, 2016 to 2025
- Food and beverage$2,25999%
- Education$191%
Companies that paid Dr. Spencer the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Peter Benjamin Spencer graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville
Dr. Spencer graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 1989.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Peter Benjamin Spencer'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 DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| 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 and Drug (CMS) (opens in a new tab)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) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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 Dr. Peter Benjamin Spencer
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Peter Benjamin Spencer's NPI number?
Dr. Peter Benjamin Spencer's NPI number is 1669479432. It was assigned on July 7, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Peter Benjamin Spencer?
Dr. Peter Benjamin Spencer is a neurologist in Saint Joseph, Michigan. The primary specialty in the NPI Registry is Neurology Physician (taxonomy code 2084N0400X).
Where does Dr. Peter Benjamin Spencer practice?
Dr. Spencer practices at 1234 Napier Avenue, Saint Joseph, MI 49085. Dr. Spencer's primary practice is Corewell Health Lakeland Hospitals - Saint Joseph Hospital in Saint Joseph, Michigan, part of Corewell Health. Dmand AI also links Dr. Spencer to 1 group practice or clinic and 1 medical group.
What is Dr. Peter Benjamin Spencer's office phone number?
The practice phone on file for Dr. Spencer is (269) 983-8300.
What is Dr. Peter Benjamin Spencer's medical license number?
Dr. Spencer holds Michigan license 5101010692.
Which hospitals is Dr. Peter Benjamin Spencer affiliated with?
Dr. Spencer practices at Corewell Health Lakeland Hospitals - Saint Joseph Hospital in Saint Joseph, Michigan. Dr. Spencer is also affiliated with Corewell Health Watervliet Hospital.
What medical group is Dr. Peter Benjamin Spencer part of?
Dr. Spencer is linked to Corewell Health Medical Group South. Dmand AI links Dr. Spencer to 1 more medical group.
Does Dr. Peter Benjamin Spencer accept Medicare?
Yes. CMS data shows Dr. Spencer billed Medicare for 686 services in 2024, and Dr. Spencer accepts Medicare assignment.
Does Dr. Peter Benjamin Spencer offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Spencer as offering telehealth services.
How many Medicare patients does Dr. Peter Benjamin Spencer see?
CMS counts 327 Medicare patients who saw Dr. Spencer in 2024, with an average age of 74.
Show 5 more questionsShow fewer questions
What services does Dr. Peter Benjamin Spencer bill to Medicare?
In 2024, Dr. Spencer's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and office visit, new patient (99205).
Where did Dr. Peter Benjamin Spencer go to medical school?
Dr. Spencer graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 1989.
What drugs does Dr. Peter Benjamin Spencer prescribe most?
In 2024 Medicare Part D data, Dr. Spencer's most prescribed drugs by claims were Gabapentin, Levetiracetam and Carbidopa-Levodopa.
Has Dr. Peter Benjamin Spencer received payments from drug or device companies?
CMS Open Payments shows $2,278 in general payments to Dr. Spencer from 36 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Peter Benjamin Spencer been practicing?
Dr. Spencer graduated from medical school in 1989, 37 years ago.
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