Active NPI 1922039213 Individual Practitioner Male Practitioner

Dr. Patrick A Siaw , MD

Internal Medicine • Buffalo, NY

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Patrick Siaw, MD is a certified Internal Medicine practicing in Buffalo, NY. With approximately 37 years of clinical experience since completing medical education in 1989, Dr. Siaw delivers high-quality medical care to the local community at 2157 MAIN ST.

Dr. Siaw maintains professional affiliations with Partners Medical Group Pllc, Mobile Physician Services Pllc, Physician Mobile Medical Care Pc and accepts Medicare assignment.

Frequently performed procedures and clinical services include subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least, initial nursing facility visit, subsequent nursing facility care with high level of medical decision making, per day, 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

2157 Main St

Buffalo, NY 142142648

Telephone 7168621984

Fax 7168621891

Associated Practice Facility / Clinic

🏢 St Catherine Laboure Medical Adult Day Healthcare Program Facility NPI 1598751547

Medicare Profile & Education

Medical School

Other

Graduation Year

1989

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Buffalo, NY

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

37 Yrs +20.3 yrs vs City Avg

City Avg: 16.7 Yrs

State Avg: 29.4 Yrs

Regional Practice Density

312 Specialists

Practicing in Buffalo, NY (12979 Statewide)

Telehealth Adoption Rate

6.7% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

59.0% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Siaw (37 Years) 37 Yrs

Buffalo Specialty Average (16.7 Years) 16.7 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
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	410	72	$201.24	$101.88
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	207	47	$271.86	$101.97
99306 Initial nursing facility visit, typically 45 minutes per day	50	48	$485.00	$172.69
99310 Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes	41	22	$405.37	$145.62
99306 Initial nursing facility visit, typically 45 minutes per day	39	37	$307.64	$171.95
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	36	21	$194.17	$70.51
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	33	22	$156.06	$70.22
99305 Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes	25	24	$270.20	$125.80
99307 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes	13	11	$100.00	$38.06
99305 Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes	12	12	$355.00	$126.38

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	319	71	$200.00	$102.28
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	195	33	$200.00	$102.41
99306 Initial nursing facility visit, typically 45 minutes per day	78	72	$295.90	$174.88
99305 Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes	59	58	$304.24	$127.87
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	27	19	$150.00	$71.22
99310 Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes	24	15	$220.00	$147.38

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	306	69	$200.00	$87.60
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	194	28	$200.00	$87.44
99305 Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes	77	75	$296.75	$124.03
99306 Initial nursing facility visit, typically 45 minutes per day	75	71	$295.31	$159.13
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	50	27	$149.40	$66.17
99318 Nursing facility annual assessment, typically 30 minutes	13	13	$200.00	$92.03
99318 Nursing facility annual assessment, typically 30 minutes	13	13	$292.00	$91.69

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	353	90	$200.00	$88.70
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	148	27	$200.00	$88.70
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	123	51	$150.00	$67.16
99306 Initial nursing facility visit, typically 45 minutes per day	79	72	$294.43	$162.34
99305 Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes	67	66	$311.19	$126.26
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	34	14	$113.12	$67.16
99318 Nursing facility annual assessment, typically 30 minutes	25	25	$200.00	$93.21

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	272	104	$200.00	$89.51
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	175	51	$200.00	$89.73
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	160	62	$150.00	$67.89
99305 Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes	90	86	$308.89	$127.37
99306 Initial nursing facility visit, typically 45 minutes per day	83	72	$296.14	$164.03
99318 Nursing facility annual assessment, typically 30 minutes	27	27	$200.00	$94.45
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	27	15	$112.00	$68.20
99306 Initial nursing facility visit, typically 45 minutes per day	14	12	$292.00	$163.77

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	326	117	$200.00	$88.38
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	192	53	$200.00	$88.49
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	185	78	$149.79	$66.53
99305 Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes	119	109	$308.82	$125.86
99306 Initial nursing facility visit, typically 45 minutes per day	97	86	$294.80	$161.40
99306 Initial nursing facility visit, typically 45 minutes per day	27	20	$292.00	$161.41
99318 Nursing facility annual assessment, typically 30 minutes	25	25	$200.00	$92.72
99316 Nursing facility discharge management, more than 30 minutes	23	23	$191.74	$102.13
99318 Nursing facility annual assessment, typically 30 minutes	18	18	$292.00	$92.70
99305 Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes	14	14	$350.00	$125.94
99307 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes	12	12	$100.00	$42.60

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	273	121	$200.00	$86.80
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	247	72	$148.62	$65.42
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	182	62	$200.00	$88.63
99305 Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes	135	129	$317.41	$125.35
99306 Initial nursing facility visit, typically 45 minutes per day	89	79	$294.61	$160.43
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	63	34	$112.60	$67.26
99318 Nursing facility annual assessment, typically 30 minutes	34	34	$200.00	$90.86
99306 Initial nursing facility visit, typically 45 minutes per day	26	24	$292.00	$161.87
99318 Nursing facility annual assessment, typically 30 minutes	24	24	$292.00	$93.49
99316 Nursing facility discharge management, more than 30 minutes	20	20	$196.20	$100.12
99307 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes	15	15	$100.00	$41.92
99305 Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes	15	12	$350.00	$126.80

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	491	197	$200.00	$86.19
99305 Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes	193	179	$311.92	$123.81
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	175	58	$200.00	$88.40
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	108	65	$149.65	$64.30
99306 Initial nursing facility visit, typically 45 minutes per day	93	86	$294.15	$159.95
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	47	34	$113.62	$66.55
99307 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes	41	21	$100.00	$41.56
99316 Nursing facility discharge management, more than 30 minutes	31	30	$192.65	$96.24
99318 Nursing facility annual assessment, typically 30 minutes	28	28	$200.00	$89.96
99305 Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes	22	20	$345.45	$125.97
99318 Nursing facility annual assessment, typically 30 minutes	17	17	$292.00	$93.25
99306 Initial nursing facility visit, typically 45 minutes per day	13	13	$292.00	$161.49

Medical Specialties & State Licenses

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License NY 211163

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 Univera

00010370101 (NY)

Commercial Insurance / Payer ID Blue Cross Of Wny

000525325005 (NY)

Commercial Insurance / Payer ID Independent Health

0410363 (NY)

Hospital & Practice Group Affiliations

Partners Medical Group Pllc

6400 Powers Rd, Orchard Park, NY 141274841

Phone: 9148439637

Mobile Physician Services Pllc

40 La Riviere Dr, Buffalo, NY 142024036

Phone: 7168931010210

Physician Mobile Medical Care Pc

None, Buffalo, NY 14202

Phone: 7168931010

Practice Associates & Co-Workers

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

8 Associated Practitioners

Dr. Meagan Sherrington , DO

Student in an Organized Health Care Education/Training Program

NPI 1104614254

Doctor of Osteopathic Medicine (D.O.)

Louise Tomczak , NP

Nurse Practitioner

NPI 1255357851

Nurse Practitioner

Dr. Matthew Pecha , MD

Student in an Organized Health Care Education/Training Program

NPI 1265174742

Doctor of Medicine (M.D.)

Marie Saroff , M>D>

Pediatrics

NPI 1356367999

Kelley Mistretta , MS, RN, ANP, C-EFM

Nurse Practitioner - Adult Health

NPI 1467874263

Master of Science, Registered Nurse, Adult Nurse Practitioner, CEFM

Judy Pasciak , NP

Nurse Practitioner

NPI 1669496139

Nurse Practitioner

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active December 07, 2011

NPI status registered as active in NPPES database

📍

Updated Practice Location December 07, 2011

Registered at 2157 MAIN ST, BUFFALO, NY 142142648 (Tel: 7168621984)

📍

Updated Business Mailing Address December 07, 2011

Registered at 2157 MAIN ST, BUFFALO, NY 142142648 (Tel: 7168621984)

👤

Provider Name / Credentials Updated December 07, 2011

Recorded as PATRICK SIAW, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) December 07, 2011

Internal Medicine (License #211163 in NY)

🟢

Initial NPI Registration & Enumeration July 05, 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: 1922039213

Entity Type:

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

Enumeration Date: July 05, 2006

Last Update: December 07, 2011

Sole Proprietor: No

Update or Correct Profile

Mailing Address

2157 Main St

Buffalo, NY 142142648

Phone: 7168621984

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.