Active NPI 1457340267 Individual Practitioner Male Practitioner

Dr. Constantine Wonais , MD

Internal Medicine • Naperville, IL

Professional Overview & Biography Verified Profile Summary

Dr. Constantine Wonais, MD is a registered healthcare professional specializing in Internal Medicine in Naperville, IL. Practice services are available at 2255 MONARCH DR under active NPI credentials.

Frequently performed procedures and clinical services include established patient outpatient office visit, blood test, clotting time, anticoagulant management of patient taking warfarin. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

2255 Monarch Dr

Naperville, IL 605634164

Telephone 6303001125

Fax 6303001394

Associated Practice Facility / Clinic

🏢 Erickson Health Medical Group Of Illinois Pc Facility NPI 1487663126

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Naperville, IL

Active Practitioner

Practitioner Clinical Experience

Active

City Avg: 27.5 Yrs

State Avg: 28.9 Yrs

Regional Practice Density

78 Specialists

Practicing in Naperville, IL (7544 Statewide)

Telehealth Adoption Rate

50.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

38.0% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2023)

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	247	92	$175.00	$134.90
85610 Blood test, clotting time	144	19	$39.00	$4.20
99213 Established patient office or other outpatient visit, typically 15 minutes	133	71	$121.00	$95.50
93793 Anticoagulant management of patient taking warfarin	109	15	$60.00	$12.04
81003 Automated urinalysis test	41	24	$24.00	$2.20
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	26	26	$218.00	$136.48
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and	19	18	$73.00	$55.10

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	482	137	$175.00	$136.46
85610 Blood test, clotting time	263	21	$39.00	$4.24
99213 Established patient office or other outpatient visit, typically 15 minutes	205	96	$121.00	$97.08
90662 Influenza vaccine split virus, preservative free	114	114	$72.00	$68.54
G0008 Administration of influenza virus vaccine	114	114	$30.00	$29.40
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	106	106	$218.00	$138.89
81003 Automated urinalysis test	66	41	$24.00	$2.22
93793 Anticoagulant management of patient taking warfarin	56	14	$60.00	$11.96
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and	40	29	$73.00	$56.72
93000 Routine ekg using at least 12 leads including interpretation and report	33	31	$129.00	$15.44
G0179 Physician re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians to affirm the initial imp	14	11	$56.00	$44.27
99495 Transitional care management services for problem of at least moderate complexity	13	13	$348.00	$221.13

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	471	138	$175.00	$139.46
85610 Blood test, clotting time	340	29	$39.00	$4.29
99213 Established patient office or other outpatient visit, typically 15 minutes	250	116	$121.00	$98.42
G0008 Administration of influenza virus vaccine	151	151	$30.00	$17.98
90662 Influenza vaccine split virus, preservative free	151	151	$72.00	$65.20
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	114	114	$218.00	$142.62
81003 Automated urinalysis test	83	55	$24.00	$2.25
93793 Anticoagulant management of patient taking warfarin	76	15	$60.00	$12.16
99307 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes	50	27	$113.00	$46.54
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and	45	37	$73.00	$56.92
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	40	21	$220.00	$96.40
93000 Routine ekg using at least 12 leads including interpretation and report	35	32	$129.00	$16.11
99310 Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes	30	17	$300.00	$143.02
99495 Transitional care management services for problem of at least moderate complexity	21	20	$352.62	$221.09
99306 Initial nursing facility visit, typically 45 minutes per day	21	17	$340.00	$176.12
99335 Established patient assisted living visit, typically 25 minutes	19	11	$199.00	$100.74
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	19	11	$152.00	$73.30

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	440	140	$175.00	$116.86
85610 Blood test, clotting time	381	31	$39.00	$4.26
99213 Established patient office or other outpatient visit, typically 15 minutes	300	134	$121.18	$80.69
93793 Anticoagulant management of patient taking warfarin	207	20	$60.00	$12.54
G0008 Administration of influenza virus vaccine	194	193	$30.00	$17.74
90662 Influenza vaccine split virus, preservative free	194	193	$71.77	$60.89
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	123	123	$218.00	$124.80
99307 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes	81	35	$113.00	$47.19
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	69	24	$220.00	$97.62
81003 Automated urinalysis test	51	37	$24.00	$2.23
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and	39	33	$73.00	$57.31
93000 Routine ekg using at least 12 leads including interpretation and report	38	33	$129.00	$18.51
99310 Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes	35	17	$300.00	$143.74
99335 Established patient assisted living visit, typically 25 minutes	29	14	$199.00	$101.93
G0009 Administration of pneumococcal vaccine	26	26	$30.00	$17.69
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	20	20	$131.00	$118.32
99306 Initial nursing facility visit, typically 45 minutes per day	17	16	$340.00	$178.46
99495 Transitional care management services for problem of at least moderate complexity	14	13	$445.00	$198.16
99305 Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes	11	11	$279.00	$137.97

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	573	166	$175.00	$115.44
85610 Blood test, clotting time	466	33	$39.00	$4.28
99213 Established patient office or other outpatient visit, typically 15 minutes	384	150	$121.00	$78.97
93793 Anticoagulant management of patient taking warfarin	302	23	$60.00	$12.78
36415 Insertion of needle into vein for collection of blood sample	210	136	$26.00	$2.94
G0008 Administration of influenza virus vaccine	158	158	$30.00	$17.39
90662 Influenza vaccine split virus, preservative free	158	158	$61.00	$54.89
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	139	139	$218.00	$123.71
99307 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes	124	46	$113.00	$46.70
81003 Automated urinalysis test	111	64	$24.00	$2.44
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	81	33	$220.00	$97.34
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and	75	57	$73.00	$56.69
99335 Established patient assisted living visit, typically 25 minutes	48	16	$199.00	$100.86
93000 Routine ekg using at least 12 leads including interpretation and report	42	34	$129.00	$18.29
G0009 Administration of pneumococcal vaccine	29	29	$30.00	$17.39
99305 Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes	26	21	$279.00	$138.29
99310 Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes	24	14	$300.00	$143.98
99306 Initial nursing facility visit, typically 45 minutes per day	23	22	$340.00	$176.75
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	22	14	$152.00	$73.15
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	20	20	$131.00	$111.93
99495 Transitional care management services for problem of at least moderate complexity	19	16	$445.00	$174.12
G0179 Physician re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians to affirm the initial imp	18	12	$56.00	$43.80

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
36415 Insertion of needle into vein for collection of blood sample	624	198	$26.00	$2.94
85610 Blood test, clotting time	598	42	$39.00	$4.75
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	525	172	$175.00	$113.11
99213 Established patient office or other outpatient visit, typically 15 minutes	462	162	$121.00	$76.70
93793 Anticoagulant management of patient taking warfarin	331	39	$60.00	$12.61
90653 Vaccine for influenza for injection into muscle	177	176	$60.00	$53.56
G0008 Administration of influenza virus vaccine	177	176	$30.00	$21.46
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	156	156	$218.00	$122.28
99307 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes	97	39	$113.00	$46.79
81003 Automated urinalysis test	83	52	$24.00	$2.71
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	81	28	$220.00	$96.26
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and	77	55	$73.00	$56.57
93000 Routine ekg using at least 12 leads including interpretation and report	52	45	$129.00	$18.00
99335 Established patient assisted living visit, typically 25 minutes	42	14	$199.00	$99.45
99305 Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes	41	33	$279.00	$136.81
99310 Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes	33	17	$300.00	$143.07
99495 Transitional care management services for problem of at least moderate complexity	29	25	$445.00	$171.72
99336 Established patient assisted living visit, typically 40 minutes	18	11	$300.00	$142.52
G0009 Administration of pneumococcal vaccine	13	13	$30.00	$21.46
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	11	11	$119.55	$105.59

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
85610 Blood test, clotting time	649	47	$39.00	$5.28
36415 Insertion of needle into vein for collection of blood sample	620	233	$26.00	$2.94
99213 Established patient office or other outpatient visit, typically 15 minutes	566	201	$121.00	$76.76
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	522	174	$175.00	$112.73
G0008 Administration of influenza virus vaccine	185	185	$30.00	$26.65
90653 Vaccine for influenza for injection into muscle	184	184	$60.00	$49.22
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	178	178	$218.00	$121.30
81003 Automated urinalysis test	90	56	$24.00	$3.02
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and	77	54	$65.68	$56.61
99307 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes	72	31	$113.00	$46.80
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	56	32	$220.00	$95.71
93000 Routine ekg using at least 12 leads including interpretation and report	43	39	$129.00	$18.05
99335 Established patient assisted living visit, typically 25 minutes	42	15	$199.00	$99.35
99306 Initial nursing facility visit, typically 45 minutes per day	31	23	$340.00	$174.38
99305 Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes	30	23	$279.00	$136.34
99336 Established patient assisted living visit, typically 40 minutes	28	16	$300.00	$141.34
99310 Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes	25	16	$300.00	$142.75
99495 Transitional care management services for problem of at least moderate complexity	25	23	$445.00	$170.98
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	12	11	$152.00	$72.39

Medical Specialties & State Licenses

CMS Verified: 2021-02-04

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License IL 036062093

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

Medicaid State Provider ID

036062093 2 (IL)

Commercial Insurance / Payer ID Bcbs

02222543 (IL)

Practice Associates & Co-Workers

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

1 Associated Practitioners

Dr. Francine Long , MD

Internal Medicine

NPI 1063406924

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 June 03, 2013

NPI status registered as active in NPPES database

📍

Updated Practice Location June 03, 2013

Registered at 2255 MONARCH DR, NAPERVILLE, IL 605634164 (Tel: 6303001125)

📍

Updated Business Mailing Address June 03, 2013

Registered at 2255 MONARCH DR, NAPERVILLE, IL 605634164 (Tel: 6303001125)

👤

Provider Name / Credentials Updated June 03, 2013

Recorded as CONSTANTINE WONAIS, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) June 03, 2013

Internal Medicine (License #036062093 in IL)

🟢

Initial NPI Registration & Enumeration October 14, 2005

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: 1457340267

Entity Type:

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

Enumeration Date: October 14, 2005

Last Update: February 04, 2021

Sole Proprietor: No

Update or Correct Profile

Mailing Address

2255 Monarch Dr

Naperville, IL 605634164

Phone: 6303001125

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.