Doctor profile · Federal record

Dr. Emerito Natanawan, M.D.

Internal Medicine Physician (CMS: Internal Medicine) · Internal Medicine Physician · Greeley, CO

  • NPI 1730194531
  • Accepts Medicare
  • 40 yrs in practice
  • Licensed in 2 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
6767 W 29Th Street, 2Nd Floor
Greeley, CO 806345474
(970) 652-2433
fax (970) 652-2252
Additional location
9831 S Western Ave
Chicago, IL 606431791
(773) 445-3500

Credentials & registration

NPPES · NUCC
NPI registered
July 2006 — 20 yrs on file
Profile last updated
December 6, 2021
Year of graduation
1986 — 40 yrs since
Specialty taxonomy
207R00000X — NUCC code
State licenses (2)
Colorado #CDR.0001214 · Illinois #036-091850

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1730194531. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
754
Distinct HCPCS
10
Medicare allowed
$74,624
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 356 202 $104
99213 Established patient office or other outpatient visit, 20-29 minutes 62 58 $77
99215 Established patient office or other outpatient visit, 40-54 minutes 61 27 $102
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit 54 54 $73
99204 New patient office or other outpatient visit, 45-59 minutes 47 47 $163
G0008 Administration of influenza virus vaccine 47 44 $31
90662 Influenza vaccine split virus, preservative free 43 40 $72
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use 28 28 $262
G0009 Administration of pneumococcal vaccine 28 28 $31
90480 Admn sarscov2 vacc 1 dose 14 14 $41

In context: peer comparison

Among 12 peers in Greeley Internal Medicine Physician, average services per provider: 109. This provider delivers 6.9× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
2,914
Patients
961
Total drug cost
$176,316
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 501 163 $6,408
Levothyroxine Sodium Generic 317 108 $4,891
Amlodipine Besylate Generic 231 80 $1,643
Gabapentin Generic 231 80 $6,550
Lisinopril Generic 225 73 $2,140
Metformin Hcl Generic 205 66 $2,012
Duloxetine Hcl Generic 164 45 $3,914
Omeprazole Generic 163 63 $3,069
Metoprolol Succinate Generic 159 52 $2,978
Losartan Potassium Generic 154 55 $2,382

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Emerito Natanawan's medical specialty?
Dr. Emerito Natanawan practices Internal Medicine Physician in Greeley, CO.
Where does Dr. Emerito Natanawan practice?
Dr. Emerito Natanawan practices at 6767 W 29Th Street, Greeley, CO 806345474. Office phone: 9706522433.
What is Dr. Emerito Natanawan's NPI?
Dr. Emerito Natanawan's National Provider Identifier (NPI) is 1730194531, issued by NPPES.
Does Dr. Emerito Natanawan accept Medicare assignment?
Yes. Dr. Emerito Natanawan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Emerito Natanawan commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99215). Source: CMS Medicare Physician & Other Practitioners file.