Active NPI 1629224118 Individual Practitioner Female Practitioner

Dr. Ruby Samuel John , MD

Internal Medicine • The Woodlands, TX

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Ruby John, MD is a certified Internal Medicine practicing in The Woodlands, TX. With approximately 21 years of clinical experience since completing medical education in 2005, Dr. John delivers high-quality medical care to the local community at 10020 RESEARCH FOREST DR.

Dr. John is affiliated with Westwood Primary Care, Pllc and accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient outpatient office visit, insertion of needle into vein for collection of blood sample, visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

10020 Research Forest Dr

The Woodlands, TX 773546780

Telephone 2813561945

Fax 2813561978

Associated Practice Facility / Clinic

🏢 Westwood Primary Care, Pllc Facility NPI 1851549851

Medicare Profile & Education

Medical School

Other

Graduation Year

2005

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in The Woodlands, TX

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

21 Yrs -1.6 yrs vs City Avg

City Avg: 22.6 Yrs

State Avg: 26.2 Yrs

Regional Practice Density

34 Specialists

Practicing in The Woodlands, TX (9538 Statewide)

Telehealth Adoption Rate

29.4% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

76.2% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. John (21 Years) 21 Yrs

The Woodlands Specialty Average (22.6 Years) 22.6 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	178	88	$401.00	$122.26
36415 Insertion of needle into vein for collection of blood sample	148	80	$15.00	$8.65
G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's	138	73	$47.25	$15.73
80053 Blood test, comprehensive group of blood chemicals	118	75	$70.00	$10.35
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count	89	71	$70.00	$7.61
84443 Blood test, thyroid stimulating hormone (TSH)	84	63	$100.00	$16.46
80061 Blood test, lipids (cholesterol and triglycerides)	78	57	$80.00	$13.12
83036 Hemoglobin A1C level	76	55	$70.00	$9.52
81003 Automated urinalysis test	69	59	$70.00	$2.20
99213 Established patient office or other outpatient visit, typically 15 minutes	61	45	$276.00	$86.74
82306 Vitamin d-3 level	58	49	$200.00	$29.01
83735 Magnesium level	55	48	$70.00	$6.57
82607 Cyanocobalamin (vitamin B-12) level	52	44	$100.00	$14.78
83550 Iron binding capacity	47	38	$70.00	$8.57
82728 Ferritin (blood protein) level	47	38	$70.00	$13.36
83540 Iron level	46	38	$70.00	$6.34
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	33	26	$538.00	$172.40
84439 Thyroxine (thyroid chemical), free	30	25	$70.00	$8.84
G0444 Annual depression screening, 5 to 15 minutes	23	23	$68.00	$17.80
84481 Thyroid hormone, t3 measurement, free	23	20	$95.00	$16.60
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	22	11	$53.00	$13.60
82043 Urine microalbumin (protein) level	20	16	$50.00	$5.66
82570 Creatinine level to test for kidney function or muscle injury	20	16	$50.00	$5.08
93000 Routine ekg using at least 12 leads including interpretation and report	18	16	$100.00	$13.61
G0446 Annual, face-to-face intensive behavioral therapy for cardiovascular disease, individual, 15 minutes	18	18	$98.00	$24.07
G0008 Administration of influenza virus vaccine	17	17	$50.00	$31.03
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	16	16	$428.00	$123.17

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	154	73	$401.00	$121.87
36415 Insertion of needle into vein for collection of blood sample	153	80	$15.00	$8.40
80053 Blood test, comprehensive group of blood chemicals	128	76	$70.00	$10.35
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count	109	73	$70.00	$7.61
81003 Automated urinalysis test	95	68	$70.00	$2.20
80061 Blood test, lipids (cholesterol and triglycerides)	89	63	$74.83	$13.12
99457 Management using the results of remote vital sign monitoring per calendar month, first 20 minutes	88	13	$162.00	$46.41
83735 Magnesium level	81	61	$70.00	$6.57
83036 Hemoglobin A1C level	62	46	$70.00	$9.52
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	54	39	$538.00	$169.47
84443 Blood test, thyroid stimulating hormone (TSH)	49	38	$91.43	$16.46
82607 Cyanocobalamin (vitamin B-12) level	41	36	$92.68	$14.78
82306 Vitamin d-3 level	38	35	$200.00	$29.01
J7613 Albuterol, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose, 1 mg	37	13	$5.00	$0.03
G0444 Annual depression screening, 5 to 15 minutes	32	32	$68.00	$17.59
82728 Ferritin (blood protein) level	29	24	$70.00	$13.36
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	28	16	$53.00	$13.54
83540 Iron level	25	22	$70.00	$6.34
G0446 Annual, face-to-face intensive behavioral therapy for cardiovascular disease, individual, 15 minutes	25	25	$98.00	$24.78
83550 Iron binding capacity	25	22	$70.00	$8.57
96127 Assessment of emotional or behavioral problems	24	18	$20.00	$4.38
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	22	22	$428.00	$123.38
99213 Established patient office or other outpatient visit, typically 15 minutes	19	18	$276.00	$82.81
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	18	18	$762.00	$211.25
G0008 Administration of influenza virus vaccine	17	17	$50.00	$29.51
90686 Vaccine for influenza for administration into muscle, 0.5 ml dosage	17	17	$80.00	$21.90
93000 Routine ekg using at least 12 leads including interpretation and report	15	15	$173.33	$13.81

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	106	64	$401.00	$123.73
36415 Insertion of needle into vein for collection of blood sample	74	60	$14.53	$2.95
99213 Established patient office or other outpatient visit, typically 15 minutes	64	44	$276.00	$87.76
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	43	29	$538.00	$174.27
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	34	34	$762.00	$213.86
J7613 Albuterol, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose, 1 mg	29	11	$5.00	$0.04
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count	20	20	$54.25	$7.61
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	18	18	$604.00	$162.20
80053 Blood test, comprehensive group of blood chemicals	17	17	$70.00	$10.35
93000 Routine ekg using at least 12 leads including interpretation and report	16	15	$68.50	$13.72

Medical Specialties & State Licenses

CMS Verified: 2025-07-28

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License TX P1334

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Hospital & Practice Group Affiliations

Westwood Primary Care, Pllc

10020 Research Forest Dr, The Woodlands, TX 773546780

Phone: 2813561945

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

22 Associated Practitioners

Joanna Vasquez , APRN, FNP-C

Nurse Practitioner - Family

NPI 1003700279

Advanced Practice Registered Nurse, Family Nurse Practitioner (Certified)

Brittany Wisniewski

Physician Assistant

NPI 1033881024

Dr. Megan Traversy-Drolet , MD

Family Medicine

NPI 1083547947

Doctor of Medicine (M.D.)

Dr. Amitkumar Patel , MD

Family Medicine

NPI 1154564698

Doctor of Medicine (M.D.)

Dr. Christian Edward Dyhianto , MD

Family Medicine

NPI 1164688099

Doctor of Medicine (M.D.)

Dr. Khoa Truong , MD

Family Medicine

NPI 1184374944

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

14 Historical Events

📍

Updated Practice Location July 28, 2025

Registered at 10020 RESEARCH FOREST DR, THE WOODLANDS, TX 773546780 (Tel: 2813561945)

📍

Updated Business Mailing Address July 28, 2025

Registered at 6912 FM 1488 RD, MAGNOLIA, TX 773541527 (Tel: 2813561945)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 28, 2025

Internal Medicine (License #P1334 in TX)

📍

Updated Practice Location February 20, 2024

Registered at 777 MAIN ST STE 500, FRISCO, TX 75036 (Tel: 9726438727)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) February 20, 2024

Internal Medicine (License #25MA08711100 in NJ)

📍

Updated Practice Location November 22, 2021

Registered at 9191 KYSER WAY STE 205, FRISCO, TX 750332783 (Tel: 9726438727)

📍

Updated Business Mailing Address November 22, 2021

Registered at 9191 KYSER WAY STE 205, FRISCO, TX 750332783 (Tel: 9726438727)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) November 22, 2021

Internal Medicine (License #P1334 in TX)

✅

NPI Profile Active July 30, 2010

NPI status registered as active in NPPES database

📍

Updated Practice Location July 30, 2010

Registered at 71A TUXEDO PL, VAUXHALL, NJ 070881110 (Tel: 9088100017)

📍

Updated Business Mailing Address July 30, 2010

Registered at 71A TUXEDO PL, VAUXHALL, NJ 070881110 (Tel: 9088100017)

👤

Provider Name / Credentials Updated July 30, 2010

Recorded as RUBY JOHN, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 30, 2010

Internal Medicine (License #25MA08711100 in NJ)

🟢

Initial NPI Registration & Enumeration August 15, 2008

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1629224118

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: August 15, 2008

Last Update: July 28, 2025

Sole Proprietor: No

Update or Correct Profile

Mailing Address

6912 Fm 1488 Rd

Magnolia, TX 773541527

Phone: 2813561945

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.