Dr. Ruby Samuel John, MD
- Medicare services, 2024
- 1,584
- Medicare patients, 2024
- 108
- Part D claims, 2024
- 2,508
- Publications
- 2
- Hospital affiliations
- 1
- Practice address
- 6912 Farm To Market Rd 1488, Magnolia, TX 77354
- Practice phone
- Call (281) 356-1945
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Magnolia Family Medicine
Magnolia, Texas
Find Dr. John'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. Ruby Samuel John is an internist in Magnolia, Texas
Dr. John practices at Magnolia Family Medicine in Magnolia, Texas.
Dr. John's NPI, 1629224118, was assigned on August 15, 2008. Dr. John graduated from Windsor University School of Medicine in 2005. Dr. John holds Texas license P1334.
- NPI
- 1629224118NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3577756279
- NPI enumeration date
- August 15, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (281) 356-1945
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 47
- Medical school graduation
- 2005
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ruby Samuel John practices at Magnolia Family Medicine in Magnolia, Texas
Dr. John's primary practice is Magnolia Family Medicine, at 6912 Farm To Market Rd 1488, Magnolia, TX 77354 in Montgomery County. The practice phone is (281) 356-1945.
- Magnolia Family Medicine6912 Farm To Market Rd 1488, Magnolia, TX 77354 · Montgomery CountyPhone(281) 356-1945
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Ruby Samuel John is affiliated with 3 sites of care and 1 medical group
Dr. John's primary practice is Magnolia Family Medicine in Magnolia, Texas. Dr. John is also affiliated with Memorial Hermann Greater Heights Hospital. The medical group on file is Magnolia Family Medicine. Dmand AI also links Dr. John to 1 more group practice or clinic, 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. Ruby Samuel John's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. John practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Magnolia Family Medicine | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ruby Samuel John is one of 8,437 internists in Texas
Internal medicine is Dr. John's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. John is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. John's licenses on file in 2 states: Texas and New Jersey.
Specialties and state licenses
- Internal medicine, TexasPrimary
- New Jersey license
Clinical focus
Dmand AI lists acute sinusitis, anxiety, asthma, atrial fibrillation and flutter, bipolar disorder, bladder disease, cerebrovascular disease and chronic anemia among the conditions Dr. John treats.
Internists near Dr. John
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. Ruby Samuel John billed Medicare for 1,584 services in 2024
CMS data shows 1,584 Medicare services from Dr. John across 27 procedure codes in 2024, for 108 Medicare patients. Medicare paid $38,402 for them. Every service was in an office.
Dr. John's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 7712024: 91218%
- Office and hospital visits
- 2023: 3332024: 27218%
- Other services
- 2023: 962024: 212121%
- Surgery
- 2023: 1532024: 1483%
- Tests and treatments
- 2023: 842024: 4052%
- Drugs given in the office
- 2023: 372024: 0100%
Dr. John compared with the Texas median for internists, 2024
- Dr. John
- Texas median
- Medicare services
- 1,584vs 5392.9 times
- Medicare patients
- 108vs 19043% below
- Part D claims
- 1,972vs 2896.8 times
Medians across 7,794 internists in Texas with Dmand AI profiles that report each measure.
Dr. John'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.
Need commercial claims for Dr. John?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. John and other internists in Texas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ruby Samuel John treated 108 Medicare patients in 2024, average age 73
CMS counts 108 Medicare patients who saw Dr. John in 2024. The largest group is 65 to 74, with 60 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.10, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. John's median patient age at 54, with 60% women.
Dr. John's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. John's Medicare patients by sex, 2024
- Women7771%
- Men3129%
Chronic conditions among Dr. John's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Diabetes34%
- Anxiety32%
- Mood disorders31%
- Depression30%
- Ischemic heart disease27%
Share of Medicare patients with each condition. A patient can have several.
Dr. John's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 54
Patient panel by sex, all payers
- Women60%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ruby Samuel John wrote 2,508 Medicare Part D claims in 2024
In 2024, Dr. John wrote 2,508 Medicare Part D claims for 183 patients. 84% of them were for generic drugs. CMS names the drug for 1,972 of them, across 60 drugs with 11 or more claims each, at $217,263 in total drug cost. In 2023, CMS named 1,800 claims across 55 drugs.
Dr. John's Part D claims by kind of drug, 2024
- Generic2,095 claims84%
- Brand-name and other413 claims16%
Dr. John'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. John's Part D claims, 2024
- Antibiotics3%75 of 2,508 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: 1,8002024: 1,97210%
Drugs named by CMS: 60 in 2024, 55 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. Ruby Samuel John takes part in Medicare
Dr. John 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. Ruby Samuel John has 2 publications on record
Dmand AI links 2 papers to Dr. John, published from 2010 to 2023. Dr. John's most frequent co-author is Umar Khan, MD.
Dr. John's most frequent co-authors
Recent publications by Dr. John
See who Dr. John researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. John works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ruby Samuel John received $1,617 in industry payments from 2019 to 2025
CMS Open Payments shows 78 general payments to Dr. John from 24 drug and device companies from 2019 to 2025. Food and beverage make up the largest share, 92% of the total. Novo Nordisk Inc paid the most, $257.
General payments to Dr. John by program year, 2019 to 2025
General payments to Dr. John by kind, 2019 to 2025
- Food and beverage$1,48092%
- Debt forgiveness$1368%
Companies that paid Dr. John the most, 2019 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ruby Samuel John graduated from Windsor University School of Medicine
Dr. John graduated from Windsor University School of Medicine in 2005.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Ruby Samuel John accepts plans from 20 insurance carriers
Dr. John is in network with 20 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 14. Check the plan with the practice before a visit.
- Aetna
- United Healthcare
- Blue Cross Blue Shield of Michigan
- Cigna
- Elevance
- HCSC
- Humana
- Alliant Health Plans
- +12 more carriersWith a free account
Plan types Dr. John accepts, by number of carriers
- PPO14
- HMO10
- Medicare9
- POS5
- EPO4
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Ruby Samuel John'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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Ruby Samuel John
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. Ruby Samuel John's NPI number?
Dr. Ruby Samuel John's NPI number is 1629224118. It was assigned on August 15, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Ruby Samuel John?
Dr. Ruby Samuel John is an internist in Magnolia, Texas. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Ruby Samuel John practice?
Dr. John practices at 6912 Farm To Market Rd 1488, Magnolia, TX 77354. Dr. John's primary practice is Magnolia Family Medicine in Magnolia, Texas. Dmand AI also links Dr. John to 1 group practice or clinic.
What is Dr. Ruby Samuel John's office phone number?
The practice phone on file for Dr. John is (281) 356-1945.
What is Dr. Ruby Samuel John's medical license number?
Dr. John holds Texas license P1334, one of the licenses on file in 2 states.
Which states has Dr. Ruby Samuel John been licensed in?
Dmand AI has state licenses on file for Dr. John in Texas (2011 to 2026) and New Jersey (2010 to 2013).
Which hospitals is Dr. Ruby Samuel John affiliated with?
Dr. John is affiliated with Memorial Hermann Greater Heights Hospital.
What medical group is Dr. Ruby Samuel John part of?
Dr. John is linked to Magnolia Family Medicine.
Does Dr. Ruby Samuel John accept Medicare?
Yes. CMS data shows Dr. John billed Medicare for 1,584 services in 2024, and Dr. John accepts Medicare assignment.
How many Medicare patients does Dr. Ruby Samuel John see?
CMS counts 108 Medicare patients who saw Dr. John in 2024, with an average age of 73.
Show 9 more questionsShow fewer questions
Is Dr. Ruby Samuel John board certified?
Yes. Dr. John is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Ruby Samuel John bill to Medicare?
In 2024, Dr. John's most billed Medicare services were office visit, established patient (99214), surgery: heart and blood vessels (36415) and medicare service (G2211).
Where did Dr. Ruby Samuel John go to medical school?
Dr. John graduated from Windsor University School of Medicine in 2005.
What drugs does Dr. Ruby Samuel John prescribe most?
In 2024 Medicare Part D data, Dr. John's most prescribed drugs by claims were Levothyroxine Sodium, Losartan Potassium and Atorvastatin Calcium.
Has Dr. Ruby Samuel John received payments from drug or device companies?
CMS Open Payments shows $1,617 in general payments to Dr. John from 24 companies from 2019 to 2025. The largest total came from Novo Nordisk Inc.
How long has Dr. Ruby Samuel John been practicing?
Dr. John graduated from medical school in 2005, 21 years ago.
Does Dr. Ruby Samuel John do research?
Dmand AI links 2 publications to Dr. John, published from 2010 to 2023.
Who does Dr. Ruby Samuel John publish with?
Dr. John's most frequent co-authors are Umar Khan, MD (1 shared paper).
What insurance does Dr. Ruby Samuel John accept?
Dr. John is in network with 20 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 14. Check the plan with the practice before a visit.
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