Dr. Maribeth December, MD
- Medicare services, 2024
- 1,490
- Medicare patients, 2024
- 424
- Part D claims, 2024
- 4,023
- Hospital affiliations
- 1
- Medical groups
- 2
- Practice address
- 1775 Ballard Rd, Park Ridge, IL 60068
- Practice phone
- Call (847) 390-5900
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Advocate Medical Group
Park Ridge, Illinois
Find Dr. December's professional email, personal email and mobile number
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Dr. Maribeth December is an internist in Park Ridge, Illinois
Dr. December practices at Advocate Medical Group in Park Ridge, Illinois.
Dr. December's NPI, 1245275635, was assigned on June 18, 2006. Dr. December graduated from Michigan State University College of Human Medicine in 1985. Dr. December holds Illinois license 036-074199.
- NPI
- 1245275635NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8527197045
- NPI enumeration date
- June 18, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (847) 390-5900
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Maribeth December practices at Advocate Medical Group in Park Ridge, Illinois
Dr. December's primary practice is Advocate Medical Group, at 1775 Ballard Rd, Park Ridge, IL 60068 in Cook County. The practice phone is (847) 390-5900.
- Advocate Medical Group1775 Ballard Rd, Park Ridge, IL 60068 · Cook CountyPhone(847) 390-5900
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Maribeth December is affiliated with 4 sites of care and 2 medical groups
Dr. December's primary practice is Advocate Medical Group in Park Ridge, Illinois. Dr. December is also affiliated with Advocate Lutheran General Hospital. The medical group on file is Dreyer Medical Clinic (Advocate Medical Group). Dmand AI also links Dr. December to 2 more group practices and clinics and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Maribeth December's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. December practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Advocate Medical Group | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Maribeth December is one of 5,652 internists in Illinois
Internal medicine is Dr. December's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. December is licensed in Illinois.
Specialties and state licenses
- Internal medicine, IllinoisPrimary
Internists near Dr. December
Counts of internists 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. Maribeth December billed Medicare for 1,490 services in 2024
CMS data shows 1,490 Medicare services from Dr. December across 18 procedure codes in 2024, for 424 Medicare patients. Medicare paid $111,030 for them.
Dr. December's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6962024: 60313%
- Other services
- 2023: 4422024: 31928%
- Surgery
- 2023: 2492024: 28213%
- Tests and treatments
- 2023: 2012024: 27336%
- Lab and pathology
- 2023: 372024: 1365%
Where Dr. December's Medicare services took place, 2024
- In an office1,41095%
- In a facility805%
Dr. December compared with the Illinois median for internists, 2024
- Dr. December
- Illinois median
- Medicare services
- 1,490vs 5662.6 times
- Medicare patients
- 424vs 2082.0 times
- Part D claims
- 3,464vs 28412.2 times
Medians across 5,192 internists in Illinois with Dmand AI profiles that report each measure.
Dr. December'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. Maribeth December treated 424 Medicare patients in 2024, average age 77
CMS counts 424 Medicare patients who saw Dr. December in 2024. The largest group is 75 to 84, with 178 patients. 75% of them have high cholesterol, and 72% have high blood pressure. 6% are also on Medicaid. Their average risk score is 1.26, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. December's median patient age at 70, with 73% women.
Dr. December's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. December's Medicare patients by sex, 2024
- Women32476%
- Men10024%
Chronic conditions among Dr. December's Medicare patients, 2024
- High cholesterol75%
- High blood pressure72%
- Arthritis46%
- Mood disorders29%
- Depression28%
- Atrial fibrillation25%
- Chronic kidney disease25%
- Diabetes25%
Share of Medicare patients with each condition. A patient can have several.
Dr. December's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women73%
- Men26%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Maribeth December wrote 4,023 Medicare Part D claims in 2024
In 2024, Dr. December wrote 4,023 Medicare Part D claims for 424 patients. 90% of them were for generic drugs. CMS names the drug for 3,464 of them, across 60 drugs with 11 or more claims each, at $173,080 in total drug cost. In 2023, CMS named 3,512 claims across 63 drugs.
Dr. December's Part D claims by kind of drug, 2024
- Generic3,602 claims90%
- Brand-name and other421 claims10%
Dr. December'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. December's Part D claims, 2024
- Opioids1%37 of 4,023 claims
- Antibiotics1%34 of 4,023 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: 3,5122024: 3,4641%
Drugs named by CMS: 60 in 2024, 63 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
How Dr. Maribeth December takes part in Medicare
Dr. December 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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Dr. Maribeth December graduated from Michigan State University College of Human Medicine
Dr. December graduated from Michigan State University College of Human Medicine in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Maribeth December'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| 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. Maribeth December
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. Maribeth December's NPI number?
Dr. Maribeth December's NPI number is 1245275635. It was assigned on June 18, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Maribeth December?
Dr. Maribeth December is an internist in Park Ridge, Illinois. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Maribeth December practice?
Dr. December practices at 1775 Ballard Rd, Park Ridge, IL 60068. Dr. December's primary practice is Advocate Medical Group in Park Ridge, Illinois. Dmand AI also links Dr. December to 2 group practices and clinics and 1 medical group.
What is Dr. Maribeth December's office phone number?
The practice phone on file for Dr. December is (847) 390-5900.
What is Dr. Maribeth December's medical license number?
Dr. December holds Illinois license 036-074199.
Which hospitals is Dr. Maribeth December affiliated with?
Dr. December is affiliated with Advocate Lutheran General Hospital.
What medical group is Dr. Maribeth December part of?
Dr. December is linked to Dreyer Medical Clinic (Advocate Medical Group). Dmand AI links Dr. December to 1 more medical group.
Does Dr. Maribeth December accept Medicare?
Yes. CMS data shows Dr. December billed Medicare for 1,490 services in 2024, and Dr. December accepts Medicare assignment.
How many Medicare patients does Dr. Maribeth December see?
CMS counts 424 Medicare patients who saw Dr. December in 2024, with an average age of 77.
What services does Dr. Maribeth December bill to Medicare?
In 2024, Dr. December's most billed Medicare services were office visit, established patient (99214), surgery: heart and blood vessels (36415) and medicare service (G0439).
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Where did Dr. Maribeth December go to medical school?
Dr. December graduated from Michigan State University College of Human Medicine in 1985.
What drugs does Dr. Maribeth December prescribe most?
In 2024 Medicare Part D data, Dr. December's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Hydrochlorothiazide.
How long has Dr. Maribeth December been practicing?
Dr. December graduated from medical school in 1985, 41 years ago.
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