Dr. Jean Ru Jen Hou, MD
- Medicare services, 2021
- 638
- Medicare patients, 2024
- 14
- Part D claims, 2024
- 7,823
- Industry payments
- $357
- Affiliated sites
- 2
- Practice address
- 655 Watkins Mill Rd., Gaithersburg, MD 20879
- Practice phone
- Call (877) 390-0033
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Kaiser Permanente Gaithersburg Medical Center - Mammography
Mammography / Breast Imaging Center · Gaithersburg, Maryland
Find Dr. Hou's professional email, personal email and mobile number
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Dr. Jean Ru Jen Hou is an internist in Gaithersburg, Maryland
Dr. Hou practices at Kaiser Permanente Gaithersburg Medical Center - Mammography in Gaithersburg, Maryland.
Dr. Hou's NPI, 1750442273, was assigned on December 12, 2006. Dr. Hou graduated from Rutgers New Jersey Medical School in 1998. Dr. Hou holds Maryland license D57362.
- NPI
- 1750442273NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6204986425
- NPI enumeration date
- December 12, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (877) 390-0033
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jean Ru Jen Hou practices at Kaiser Permanente Gaithersburg Medical Center - Mammography in Gaithersburg, Maryland
Dr. Hou's primary practice is Kaiser Permanente Gaithersburg Medical Center - Mammography, at 655 Watkins Mill Rd., Gaithersburg, MD 20879. The practice phone is (877) 390-0033.
- Kaiser Permanente Gaithersburg Medical Center - Mammography655 Watkins Mill Rd., Gaithersburg, MD 20879Phone(877) 390-0033
Source: Dmand AI Affiliation Data
Dr. Jean Ru Jen Hou is affiliated with 2 sites of care and 1 medical group
Dr. Hou's primary practice is Kaiser Permanente Gaithersburg Medical Center - Mammography in Gaithersburg, Maryland. The medical group on file is Mid-Atlantic Permanente Medical Group. Dmand AI also links Dr. Hou to 1 more ambulatory surgery center, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Jean Ru Jen Hou's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hou practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Permanente Gaithersburg Medical Center - Mammography | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jean Ru Jen Hou is one of 3,320 internists in Maryland
Internal medicine is Dr. Hou's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Hou's licenses on file in 3 states: Maryland, District of Columbia and Virginia.
Specialties and state licenses
- Internal medicine, MarylandPrimary
- District of Columbia license
- Virginia license
Internists near Dr. Hou
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. Jean Ru Jen Hou billed Medicare for 638 services in 2021
CMS data shows 638 Medicare services from Dr. Hou across 6 procedure codes in 2021, for 14 Medicare patients. Medicare paid $22,598 for them. Every service was in an office.
Dr. Hou's Medicare services by type, 2019 to 2021
- 2019
- 2021
- Other services
- 2019: 02021: 638
- Office and hospital visits
- 2019: 182021: 0100%
Dr. Hou compared with the Maryland median for internists, 2021
- Dr. Hou
- Maryland median
- Medicare services
- 638vs 656Close to median
- Medicare patients
- 14vs 25194% below
- Part D claims
- 7,287vs 30923.6 times
Medians across 3,215 internists in Maryland with Dmand AI profiles that report each measure.
Dr. Hou's most billed Medicare procedure codes, 2021
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. Hou and other internists in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jean Ru Jen Hou treated 14 Medicare patients in 2024, average age 75
CMS counts 14 Medicare patients who saw Dr. Hou in 2024. Their average risk score is 0.95, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Hou's median patient age at 65, with 66% women.
Dr. Hou'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
- Women66%
- Men33%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jean Ru Jen Hou wrote 7,823 Medicare Part D claims in 2024
In 2024, Dr. Hou wrote 7,823 Medicare Part D claims for 584 patients. 87% of them were for generic drugs. CMS names the drug for 7,287 of them, across 106 drugs with 11 or more claims each, at $318,123 in total drug cost. In 2023, CMS named 7,425 claims across 104 drugs.
Dr. Hou's Part D claims by kind of drug, 2024
- Generic6,810 claims87%
- Brand-name919 claims12%
- Other94 claims1%
Dr. Hou'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. Hou's Part D claims, 2024
- Opioids2%168 of 7,823 claims
- Antibiotics2%119 of 7,823 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: 7,4252024: 7,2872%
Drugs named by CMS: 106 in 2024, 104 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. Jean Ru Jen Hou takes part in Medicare
Dr. Hou 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. Jean Ru Jen Hou received $357 in industry payments from 2016 to 2017
CMS Open Payments shows 3 general payments to Dr. Hou from 1 drug or device company from 2016 to 2017. Food and beverage make up the largest share, 100% of the total. Alexion Pharmaceuticals, Inc. paid the most, $357.
General payments to Dr. Hou by program year, 2016 to 2017
Companies that paid Dr. Hou the most, 2016 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Jean Ru Jen Hou graduated from Rutgers New Jersey Medical School
Dr. Hou graduated from Rutgers New Jersey Medical School in 1998.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Jean Ru Jen Hou'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. Jean Ru Jen Hou
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. Jean Ru Jen Hou's NPI number?
Dr. Jean Ru Jen Hou's NPI number is 1750442273. It was assigned on December 12, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Jean Ru Jen Hou?
Dr. Jean Ru Jen Hou is an internist in Gaithersburg, Maryland. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Jean Ru Jen Hou practice?
Dr. Hou practices at 655 Watkins Mill Rd., Gaithersburg, MD 20879. Dr. Hou's primary practice is Kaiser Permanente Gaithersburg Medical Center - Mammography in Gaithersburg, Maryland. Dmand AI also links Dr. Hou to 1 ambulatory surgery center.
What is Dr. Jean Ru Jen Hou's office phone number?
The practice phone on file for Dr. Hou is (877) 390-0033.
What is Dr. Jean Ru Jen Hou's medical license number?
Dr. Hou holds Maryland license D57362, one of the licenses on file in 3 states.
Which states has Dr. Jean Ru Jen Hou been licensed in?
Dmand AI has state licenses on file for Dr. Hou in Maryland, District of Columbia and Virginia.
What medical group is Dr. Jean Ru Jen Hou part of?
Dr. Hou is linked to Mid-Atlantic Permanente Medical Group.
Does Dr. Jean Ru Jen Hou accept Medicare?
Yes. CMS data shows Dr. Hou billed Medicare for 638 services in 2021, and Dr. Hou accepts Medicare assignment.
How many Medicare patients does Dr. Jean Ru Jen Hou see?
CMS counts 14 Medicare patients who saw Dr. Hou in 2024, with an average age of 75.
What services does Dr. Jean Ru Jen Hou bill to Medicare?
In 2021, Dr. Hou's most billed Medicare services were medical service (0011A), medical service (0012A) and medical service (0064A).
Show 4 more questionsShow fewer questions
Where did Dr. Jean Ru Jen Hou go to medical school?
Dr. Hou graduated from Rutgers New Jersey Medical School in 1998.
What drugs does Dr. Jean Ru Jen Hou prescribe most?
In 2024 Medicare Part D data, Dr. Hou's most prescribed drugs by claims were Atorvastatin Calcium, Losartan Potassium and Amlodipine Besylate.
Has Dr. Jean Ru Jen Hou received payments from drug or device companies?
CMS Open Payments shows $357 in general payments to Dr. Hou from 1 company from 2016 to 2017. The largest total came from Alexion Pharmaceuticals, Inc.
How long has Dr. Jean Ru Jen Hou been practicing?
Dr. Hou graduated from medical school in 1998, 28 years ago.
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