Active NPI 1932129582 Individual Practitioner Male Practitioner

Dr. Gary Guo , MD

Internal Medicine • Valhalla, NY

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Gary Guo, MD is a certified Internal Medicine practicing in Valhalla, NY. With approximately 44 years of clinical experience since completing medical education in 1982, Dr. Guo delivers high-quality medical care to the local community at 95 GRASSLANDS RD-NYMC.

Dr. Guo is affiliated with Westchester Medical Center Advanced Physician Services Pc and accepts Medicare assignment.

Frequently performed procedures and clinical services include subsequent hospital care with moderate levelof medical decision making, if using time, at least, hospital discharge day management, initial hospital care with straightforward or low-level medical decision making, if using time, at least. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

95 Grasslands Rd-Nymc
Dept Of Medicine-Munger Pavilion

Valhalla, NY 10595

Telephone 9144938370

Fax 9145944434

Associated Practice Facility / Clinic

🏢 Westchester Medicine Faculty Associates, Pllc Facility NPI 1447332267

Medicare Profile & Education

Medical School

Other

Graduation Year

1982

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Valhalla, NY

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

44 Yrs +24.4 yrs vs City Avg

City Avg: 19.6 Yrs

State Avg: 29.4 Yrs

Regional Practice Density

71 Specialists

Practicing in Valhalla, NY (12979 Statewide)

Telehealth Adoption Rate

18.3% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

72.9% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Guo (44 Years) 44 Yrs

Valhalla Specialty Average (19.6 Years) 19.6 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
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	558	137	$276.00	$85.12
99238 Hospital discharge day management, 30 minutes or less	71	68	$281.00	$89.31
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	33	32	$533.00	$143.80
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	13	13	$776.00	$187.30

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	403	130	$276.00	$92.37
99238 Hospital discharge day management, 30 minutes or less	80	79	$281.00	$94.54
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	21	21	$776.00	$202.29

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	501	157	$276.00	$83.55
99238 Hospital discharge day management, 30 minutes or less	77	71	$281.00	$85.18
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	31	29	$776.00	$233.85
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	22	15	$397.00	$118.21
99217 Hospital observation care on day of discharge	20	20	$279.00	$84.76
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	14	13	$526.64	$162.89

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	562	151	$276.00	$85.19
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	82	41	$397.00	$122.21
99238 Hospital discharge day management, 30 minutes or less	74	70	$281.00	$85.68
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	28	28	$533.00	$162.48

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	625	164	$265.88	$85.28
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	73	24	$380.70	$122.84
99238 Hospital discharge day management, 30 minutes or less	69	68	$270.25	$86.85
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	53	48	$516.81	$163.13
99217 Hospital observation care on day of discharge	14	14	$268.79	$86.07

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	830	229	$264.00	$84.02
99238 Hospital discharge day management, 30 minutes or less	124	117	$267.00	$84.85
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	124	39	$380.00	$120.03
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	49	48	$511.00	$156.48
99217 Hospital observation care on day of discharge	22	21	$268.00	$84.85
99226 Subsequent observation care, typically 35 minutes per day	20	18	$383.00	$120.56

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	903	247	$264.00	$83.20
99238 Hospital discharge day management, 30 minutes or less	80	76	$267.00	$83.94
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	54	27	$380.00	$118.99
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	52	52	$511.00	$157.13

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	930	267	$264.00	$82.02
99238 Hospital discharge day management, 30 minutes or less	89	86	$267.00	$82.76
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	73	23	$380.00	$119.08
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	53	53	$511.00	$154.83
99231 Follow-up hospital inpatient care per day, typically 15 minutes	35	16	$144.00	$45.03
99217 Hospital observation care on day of discharge	19	18	$268.00	$83.57
99225 Subsequent observation care, typically 25 minutes per day	19	15	$265.00	$82.90

Medical Specialties & State Licenses

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License NY 234103

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.

Additional State Medicaid & Healthcare Payer Identifiers

Commercial Insurance / Payer ID Ghi Ppo

2589997 (NY)

Commercial Insurance / Payer ID Empire Bcbs

3431H2 (NY)

Commercial Insurance / Payer ID Healthnet

5C5569 (NY)

Commercial Insurance / Payer ID Oxford

P3538345 (NY)

Commercial Insurance / Payer ID Ghi Hmo

00000087864 (NY)

Commercial Insurance / Payer ID Mvp

4147380 (NY)

Commercial Insurance / Payer ID Aetna Hmo

1443558 (NY)

Commercial Insurance / Payer ID Aetna Ppo

7528769 (NY)

Commercial Insurance / Payer ID Atlantis

GG4103

Commercial Insurance / Payer ID Railroad Medicare

P00227230 (NY)

Hospital & Practice Group Affiliations

Westchester Medical Center Advanced Physician Services Pc

95 Grasslands Rd, Valhalla, NY 105951652

Phone: 9144936940

Westchester Medical Center Advanced Physician Services Pc

100 Woods Rd, Valhalla, NY 105951530

Practice Associates & Co-Workers

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

20 Associated Practitioners

Dr. Madhavi Koka , MD

Hospitalist

NPI 1073535589

Doctor of Medicine (M.D.)

Dr. Marc El Khoury , MD

Internal Medicine - Infectious Disease

NPI 1083825996

Doctor of Medicine (M.D.)

Dr. Arif Mumtaz , MD

Internal Medicine

NPI 1093736472

Doctor of Medicine (M.D.)

Dr. Irene Weiss , MD

Internal Medicine - Endocrinology, Diabetes & Metabolism

NPI 1104848373

Doctor of Medicine (M.D.)

Dr. Deborah Shapiro , MD

Internal Medicine - Rheumatology

NPI 1306869078

Doctor of Medicine (M.D.)

Dr. Christopher Nabors , MD

Internal Medicine

NPI 1437383643

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active February 29, 2008

NPI status registered as active in NPPES database

📍

Updated Practice Location February 29, 2008

Registered at 95 GRASSLANDS RD-NYMC, DEPT OF MEDICINE-MUNGER PAVILION, VALHALLA, NY 10595 (Tel: 9144938370)

📍

Updated Business Mailing Address February 29, 2008

Registered at 95 GRASSLANDS RD-NYMC, DEPT OF MEDICINE-MUNGER PAVILION, VALHALLA, NY 10595 (Tel: 9144938370)

👤

Provider Name / Credentials Updated February 29, 2008

Recorded as GARY GUO, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) February 29, 2008

Internal Medicine (License #234103 in NY)

🟢

Initial NPI Registration & Enumeration July 19, 2006

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: 1932129582

Entity Type:

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

Enumeration Date: July 19, 2006

Last Update: February 29, 2008

Sole Proprietor: No

Update or Correct Profile

Mailing Address

95 Grasslands Rd-Nymc, Dept Of Medicine-Munger Pavilion

Valhalla, NY 10595

Phone: 9144938370

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.