Dr. Jennifer Elizabeth Castillo, MD
- Medicare services, 2024
- 461
- Medicare patients, 2024
- 113
- Part D claims, 2024
- 3,063
- Hospital affiliations
- 5
- Industry payments
- $54
- Practice address
- 1500 E Medical Center Dr, Ann Arbor, MI 48109
- Practice phone
- Call (734) 936-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
University Hospital in Ann Arbor
Ann Arbor, Michigan
Find Dr. Castillo'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. Jennifer Elizabeth Castillo is an internist in Ann Arbor, Michigan
Dr. Castillo practices at University Hospital in Ann Arbor in Ann Arbor, Michigan.
Dr. Castillo's NPI, 1902995863, was assigned on October 11, 2006. Dr. Castillo graduated from University of Pittsburgh School of Medicine in 2002. Dr. Castillo holds Michigan license 4301079987.
- NPI
- 1902995863NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1254360332
- NPI enumeration date
- October 11, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (734) 936-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jennifer Elizabeth Castillo practices at University Hospital in Ann Arbor in Ann Arbor, Michigan
Dr. Castillo's primary practice is University Hospital in Ann Arbor, at 1500 E Medical Center Dr, Ann Arbor, MI 48109 in Washtenaw County. The practice phone is (734) 936-4000.
- University Hospital in Ann Arbor1500 E Medical Center Dr, Ann Arbor, MI 48109 · Washtenaw CountyPhone(734) 936-4000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Jennifer Elizabeth Castillo is affiliated with 7 sites of care and 1 medical group
Dr. Castillo's primary practice is University Hospital in Ann Arbor in Ann Arbor, Michigan. Dr. Castillo is also affiliated with University Hospital. The medical group on file is Emmaus Health Partners. Dmand AI also links Dr. Castillo to 4 more hospitals and 1 group practice or clinic, 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. Jennifer Elizabeth Castillo's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Castillo practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| University Hospital in Ann Arbor | Available with a free account |
| +6 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jennifer Elizabeth Castillo is one of 4,804 internists in Michigan
Internal medicine is Dr. Castillo's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Castillo is licensed in Michigan.
Specialties and state licenses
- Internal medicine, MichiganPrimary
Internists near Dr. Castillo
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. Jennifer Elizabeth Castillo billed Medicare for 461 services in 2024
CMS data shows 461 Medicare services from Dr. Castillo across 10 procedure codes in 2024, for 113 Medicare patients. Medicare paid $38,279 for them. Every service was in an office.
Dr. Castillo's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2912024: 21426%
- Other services
- 2023: 1382024: 17829%
- Tests and treatments
- 2023: 452024: 6953%
- Lab and pathology
- 2023: 242024: 0100%
Dr. Castillo compared with the Michigan median for internists, 2024
- Dr. Castillo
- Michigan median
- Medicare services
- 461vs 4239% above
- Medicare patients
- 113vs 15929% below
- Part D claims
- 2,442vs 3147.8 times
Medians across 4,524 internists in Michigan with Dmand AI profiles that report each measure.
Dr. Castillo'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Castillo and other internists in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jennifer Elizabeth Castillo treated 113 Medicare patients in 2024, average age 71
CMS counts 113 Medicare patients who saw Dr. Castillo in 2024. The largest group is 65 to 74, with 62 patients. 57% of them have high cholesterol, and 52% have high blood pressure. Their average risk score is 0.86, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Castillo's median patient age at 59, with 78% women.
Dr. Castillo's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Castillo's Medicare patients by sex, 2024
- Women9483%
- Men1917%
Chronic conditions among Dr. Castillo's Medicare patients, 2024
- High cholesterol57%
- High blood pressure52%
- Arthritis37%
- Osteoporosis31%
- Anxiety20%
- Ischemic heart disease19%
- Mood disorders19%
- Cancer17%
Share of Medicare patients with each condition. A patient can have several.
Dr. Castillo's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women78%
- Men21%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jennifer Elizabeth Castillo wrote 3,063 Medicare Part D claims in 2024
In 2024, Dr. Castillo wrote 3,063 Medicare Part D claims for 214 patients. 84% of them were for generic drugs. CMS names the drug for 2,442 of them, across 70 drugs with 11 or more claims each, at $248,536 in total drug cost. In 2023, CMS named 1,941 claims across 59 drugs.
Dr. Castillo's Part D claims by kind of drug, 2024
- Generic2,574 claims84%
- Brand-name458 claims15%
- Other31 claims1%
Dr. Castillo'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. Castillo's Part D claims, 2024
- Opioids2%64 of 3,063 claims
- Antibiotics3%85 of 3,063 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: 1,9412024: 2,44226%
Drugs named by CMS: 70 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. Jennifer Elizabeth Castillo offers telehealth to Medicare patients
Dr. Castillo accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Castillo as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Jennifer Elizabeth Castillo received $54 in industry payments from 2020 to 2025
CMS Open Payments shows 4 general payments to Dr. Castillo from 2 drug and device companies from 2020 to 2025. Food and beverage make up the largest share, 100% of the total. Novartis Pharmaceuticals Corporation paid the most, $36.
General payments to Dr. Castillo by program year, 2020 to 2025
Companies that paid Dr. Castillo the most, 2020 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Jennifer Elizabeth Castillo graduated from University of Pittsburgh School of Medicine
Dr. Castillo graduated from University of Pittsburgh School of Medicine in 2002.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Jennifer Elizabeth Castillo'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) |
| 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. Jennifer Elizabeth Castillo
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. Jennifer Elizabeth Castillo's NPI number?
Dr. Jennifer Elizabeth Castillo's NPI number is 1902995863. It was assigned on October 11, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Jennifer Elizabeth Castillo?
Dr. Jennifer Elizabeth Castillo is an internist in Ann Arbor, Michigan. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Jennifer Elizabeth Castillo practice?
Dr. Castillo practices at 1500 E Medical Center Dr, Ann Arbor, MI 48109. Dr. Castillo's primary practice is University Hospital in Ann Arbor in Ann Arbor, Michigan. Dmand AI also links Dr. Castillo to 4 hospitals and 1 group practice or clinic.
What is Dr. Jennifer Elizabeth Castillo's office phone number?
The practice phone on file for Dr. Castillo is (734) 936-4000.
What is Dr. Jennifer Elizabeth Castillo's medical license number?
Dr. Castillo holds Michigan license 4301079987.
Which hospitals is Dr. Jennifer Elizabeth Castillo affiliated with?
Dr. Castillo is affiliated with University Hospital. Dmand AI links Dr. Castillo to 4 more hospitals.
What medical group is Dr. Jennifer Elizabeth Castillo part of?
Dr. Castillo is linked to Emmaus Health Partners.
Does Dr. Jennifer Elizabeth Castillo accept Medicare?
Yes. CMS data shows Dr. Castillo billed Medicare for 461 services in 2024, and Dr. Castillo accepts Medicare assignment.
Does Dr. Jennifer Elizabeth Castillo offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Castillo as offering telehealth services.
How many Medicare patients does Dr. Jennifer Elizabeth Castillo see?
CMS counts 113 Medicare patients who saw Dr. Castillo in 2024, with an average age of 71.
Show 5 more questionsShow fewer questions
What services does Dr. Jennifer Elizabeth Castillo bill to Medicare?
In 2024, Dr. Castillo's most billed Medicare services were office visit, established patient (99214), medicare service (G0439) and medicare service (G2211).
Where did Dr. Jennifer Elizabeth Castillo go to medical school?
Dr. Castillo graduated from University of Pittsburgh School of Medicine in 2002.
What drugs does Dr. Jennifer Elizabeth Castillo prescribe most?
In 2024 Medicare Part D data, Dr. Castillo's most prescribed drugs by claims were Amlodipine Besylate, Atorvastatin Calcium and Losartan Potassium.
Has Dr. Jennifer Elizabeth Castillo received payments from drug or device companies?
CMS Open Payments shows $54 in general payments to Dr. Castillo from 2 companies from 2020 to 2025. The largest total came from Novartis Pharmaceuticals Corporation.
How long has Dr. Jennifer Elizabeth Castillo been practicing?
Dr. Castillo graduated from medical school in 2002, 24 years ago.
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