Active NPI 1013021781 Individual Practitioner Male Practitioner

Dr. John Oliga , MD

Internal Medicine • Decatur, GA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. John Oliga, MD is a certified Internal Medicine practicing in Decatur, GA. With approximately 33 years of clinical experience since graduating from Howard University College Of Medicine in 1993, Dr. Oliga delivers high-quality medical care to the local community at 4153B FLAT SHOALS PKWY.

Dr. Oliga is affiliated with Centerwell Senior Primary Care Ga Pc 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

4153b Flat Shoals Pkwy
Ste 200

Decatur, GA 300344189

Telephone 4045855049

Fax 4045910292

Medicare Profile & Education

Medical School

Howard University College Of Medicine

Graduation Year

1993

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Decatur, GA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

33 Yrs +9.9 yrs vs City Avg

City Avg: 23.1 Yrs

State Avg: 25.9 Yrs

Regional Practice Density

148 Specialists

Practicing in Decatur, GA (4065 Statewide)

Telehealth Adoption Rate

13.5% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

41.3% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Oliga (33 Years) 33 Yrs

Decatur Specialty Average (23.1 Years) 23.1 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	27	17	$220.00	$129.85
36415 Insertion of needle into vein for collection of blood sample	19	15	$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	17	12	$35.00	$16.57
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	16	16	$286.88	$168.80
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	12	12	$220.42	$132.45

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	84	66	$425.00	$127.91
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	32	32	$396.28	$129.08
81002 Urinalysis, manual test	26	25	$10.00	$3.41
93000 Routine ekg using at least 12 leads including interpretation and report	22	22	$69.00	$14.53
83036 Hemoglobin A1C level	20	18	$38.05	$9.52
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	17	17	$606.00	$179.14
99213 Established patient office or other outpatient visit, typically 15 minutes	14	13	$305.00	$90.32
36415 Insertion of needle into vein for collection of blood sample	13	13	$19.23	$8.40
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use	12	12	$852.17	$256.90

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	217	102	$419.01	$129.27
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	61	61	$417.13	$132.51
93000 Routine ekg using at least 12 leads including interpretation and report	42	42	$68.36	$14.09
81003 Automated urinalysis test	37	36	$6.08	$2.23
G0008 Administration of influenza virus vaccine	30	30	$109.73	$29.40
90694 Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage	29	29	$220.03	$70.25
83036 Hemoglobin A1C level	27	17	$38.11	$9.62
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	26	26	$588.35	$181.90
99213 Established patient office or other outpatient visit, typically 15 minutes	17	16	$293.53	$91.83
81002 Urinalysis, manual test	15	15	$10.00	$3.18

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	273	109	$382.40	$130.89
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	68	68	$396.12	$133.88
93000 Routine ekg using at least 12 leads including interpretation and report	49	49	$75.14	$14.97
G0008 Administration of influenza virus vaccine	40	37	$61.75	$17.02
90694 Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage	37	34	$193.76	$65.55
83036 Hemoglobin A1C level	33	21	$39.27	$9.71
81003 Automated urinalysis test	17	13	$6.65	$2.25
G0009 Administration of pneumococcal vaccine	13	13	$58.23	$17.11

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	167	103	$356.83	$110.46
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	40	40	$381.68	$117.37
G0008 Administration of influenza virus vaccine	31	31	$49.00	$16.94
90694 Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage	31	31	$146.00	$61.00
93000 Routine ekg using at least 12 leads including interpretation and report	25	25	$77.04	$17.38
81003 Automated urinalysis test	24	24	$7.42	$2.24
99442 Telephone medical discussion with physician, 11-20 minutes	14	13	$88.00	$76.25
83036 Hemoglobin A1C level	14	11	$39.57	$9.71

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	315	130	$341.89	$106.28
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	75	75	$367.72	$112.26
93000 Routine ekg using at least 12 leads including interpretation and report	75	75	$72.44	$16.40
G0008 Administration of influenza virus vaccine	40	39	$55.75	$16.60
90653 Vaccine for influenza for injection into muscle	34	34	$140.00	$58.34
G0009 Administration of pneumococcal vaccine	16	16	$63.75	$16.60
90670 Pneumococcal vaccine for injection into muscle	12	12	$1085.00	$199.77

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	340	141	$225.00	$107.59
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	92	92	$237.00	$116.88
93000 Routine ekg using at least 12 leads including interpretation and report	85	83	$52.00	$17.01
G0008 Administration of influenza virus vaccine	49	46	$46.00	$20.45
90662 Influenza vaccine split virus, preservative free	32	32	$63.00	$52.30
81003 Automated urinalysis test	24	23	$16.00	$2.71
G0009 Administration of pneumococcal vaccine	23	23	$46.00	$20.45
90670 Pneumococcal vaccine for injection into muscle	16	16	$192.00	$188.16
Q2035 Influenza virus vaccine, split virus, when administered to individuals 3 years of age and older, for intramuscular use (afluria)	12	12	$25.00	$17.34

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	424	155	$225.00	$103.19
93000 Routine ekg using at least 12 leads including interpretation and report	97	96	$52.00	$16.52
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	88	88	$237.00	$112.01
G0008 Administration of influenza virus vaccine	51	51	$46.00	$25.34
G0009 Administration of pneumococcal vaccine	41	40	$46.00	$25.34
81002 Urinalysis, manual test	36	34	$16.00	$3.43
81003 Automated urinalysis test	32	30	$16.00	$2.95
90670 Pneumococcal vaccine for injection into muscle	31	31	$192.00	$185.05
81001 Manual urinalysis test with examination using microscope, automated	25	25	$16.00	$4.26
90662 Influenza vaccine split virus, preservative free	21	21	$63.00	$46.58
Q2038 Influenza virus vaccine, split virus, when administered to individuals 3 years of age and older, for intramuscular use (fluzone)	16	16	$63.00	$18.65
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	12	12	$84.00	$82.32
Q2035 Influenza virus vaccine, split virus, when administered to individuals 3 years of age and older, for intramuscular use (afluria)	11	11	$25.00	$17.34

Medical Specialties & State Licenses

CMS Verified: 2026-05-12

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License GA 39890

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

Centerwell Senior Primary Care Ga Pc

6085 Old National Hwy, South Fulton, GA 303494333

Phone: 4707546360

Practice Associates & Co-Workers

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

4 Associated Practitioners

Heather Anthony , NP

Nurse Practitioner - Family

NPI 1275247405

Nurse Practitioner

Dr. Brittany Jacob , MD

Family Medicine

NPI 1417433533

Doctor of Medicine (M.D.)

Telicia Scott , PA-C

Physician Assistant - Medical

NPI 1649344938

Physician Assistant (Certified)

Dr. Grantley Joseph , MD

Internal Medicine

NPI 1861506016

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 November 25, 2014

NPI status registered as active in NPPES database

📍

Updated Practice Location November 25, 2014

Registered at 4153B FLAT SHOALS PKWY, STE 200, DECATUR, GA 300344189 (Tel: 4045855049)

📍

Updated Business Mailing Address November 25, 2014

Registered at PO BOX 934915, ATLANTA, GA 311934915 (Tel: 4045017969)

👤

Provider Name / Credentials Updated November 25, 2014

Recorded as JOHN OLIGA, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) November 25, 2014

Internal Medicine (License #39890 in GA)

🟢

Initial NPI Registration & Enumeration August 18, 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: 1013021781

Entity Type:

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

Enumeration Date: August 18, 2006

Last Update: May 12, 2026

Sole Proprietor: No

Update or Correct Profile

Mailing Address

Po Box 934915

Atlanta, GA 311934915

Phone: 4045017969

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.