2026 data CMS NPPES NUCC Taxonomy

Doctors in Merrillville, IN

Compiled from official public sources by the PlainDoctor editorial team.

Active healthcare providers in Merrillville sourced from the CMS NPPES weekly file, no proprietary ratings, no editorial scores. NPI counts, specialty distribution, and primary practice addresses refreshed each release.

1,935
Providers
CMS NPPES-registered
20
Specialties
NUCC taxonomy codes
Behavior Technician
Top specialty
607 providers
Indiana
State
IN

1,935 healthcare providers across 20 specialties

Merrillville, Indiana appears in the CMS National Plan and Provider Enumeration System with 1,935 registered healthcare providers spanning 20 distinct NUCC-taxonomy specialties. This count includes every individual clinician who has applied for an NPI and listed a practice address in Merrillville - physicians, dentists, nurse practitioners, physician assistants, chiropractors, physical therapists, optometrists, psychologists, podiatrists, and every other credentialed provider type CMS tracks. It does not measure hospital beds, urgent-care capacity, or whether a given clinic is accepting new patients; it measures the pool of professionals with current NPI enrollment and a Merrillville practice location on file. Every figure is drawn from the federal National Provider Identifier Registry (CMS NPPES) - more than 7 million providers, maintained since May 2007, with 2023 Medicare Part D data, and, according to CMS, can be searched, compared, and traced in our methodology.

The provider mix in Merrillville is weighted toward Behavior Technician (607 clinicians, followed by Counselor with 104 and Mental Health Counselor with 103). That distribution reflects how NPPES records specialty: providers self-select a primary taxonomy code, so a family physician who also practices geriatrics will show up under whichever NUCC code they registered first. Relative to Indiana's population, Merrillville reports roughly 28.2 providers per 100,000 residents using the state-level denominator, which is a rough proxy rather than a precise access-to-care measurement; the true catchment area of any {cityName} clinician extends beyond the municipal boundary.

Within Indiana, Merrillville ranks #12 of 265 cities tracked by provider count, accounting for 1.7% of the state's registered providers. Of Indiana's most common specialties, Speech-Language Pathologist is the most prominent one with no provider currently listing a Merrillville practice address, a coverage gap Merrillville patients typically fill by traveling to a larger nearby hub.

For Merrillville patients, this directory is most useful as a starting shortlist, searching by specialty narrows the 690-taxonomy roster to clinicians with the relevant training, and each provider page links to NPI, state licensing boards, and the NPPES registry for credential verification. Important: PlainDoctor is a directory of publicly available CMS government data, not a review site, a ranking, or medical advice. NPPES data is self-reported and refreshed monthly, so listing details may be out of date; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients. Nothing on this page substitutes for consulting a licensed clinician about your personal health decisions.

1,935
Providers
20
Specialties
#12
of 265 IN cities
1.7%
of IN providers
28.2
Per 100K (state)

Which specialties are most common in Merrillville

Behavior Technician 607
Counselor 104
Mental Health Counselor 103
Clinical Social Worker 74
Physical Therapist 53
Pharmacist 51
Family Nurse Practitioner 50
Social Worker 45
Behavior Analyst 44
Family Medicine Physician 32
Optometrist 32
Case Manager/Care Coordinator 28
Occupational Therapist 25
Addiction (Substance Use Disorder) Counselor 25
Internal Medicine Physician 24
Student in an Organized Health Care Education/Training Program 23
Registered Nurse 23
Dentist 23
Clinical Psychologist 23
Nurse Practitioner 19

Healthcare Providers (Page 13)

Name
Carol Gray, COTA/L
Occupational Therapy Assistant
Gwen Graystone, P.T.
Physical Therapist
Emily Greco
Speech-Language Pathologist
Precious Green
Behavior Technician
Kristina Greene, R.D.,M.S., C.D.E.
Registered Dietitian
Maria Angelica Greer, BS
Behavior Technician
Phaedra Greer
Case Manager/Care Coordinator
Sharon Greiner, MSN, CNM ,FNP-BC
Family Nurse Practitioner
Elisa Grieger
Occupational Therapy Assistant
Medina Griffin
Behavior Technician
Tricia Griffo, LCSW
Mental Health Counselor
Melinda Griggs, BS
Counselor
Cierra Griggs-Bradley, PA-C
Physician Assistant
Heather Grinder, H.I.S.
Hearing Instrument Specialist
Alyssa Grkinich, OD
Optometrist
David Gross, D.O.
Ophthalmology Physician
Pete Grubnich, DDS
Dentist
Anna Grydzuk
Behavior Technician
Tamara Grzesik, LMHC
Mental Health Counselor
Jessica Grzymski
Behavior Technician
Liliana Guajardo
Behavior Technician
Isabelle Guardiola, RBT
Behavior Technician
Raul Guevara, M.D.
Neurology Physician
Verna Guevarra, FNP-BC
Family Nurse Practitioner
Edward Gurauskas, HSPP
Clinical Psychologist
Margaret Gurley, R.PH.
Pharmacist
Jessica Gutesha
Behavior Technician
Antonio Guzman
Behavior Technician
Carissa Haberlin, LMHC
Mental Health Counselor
Dominique Hacker, RBT
Behavior Technician
Rawan Haddad, MSCC, CARC-MH/GS
Addiction (Substance Use Disorder) Counselor
Husam Hafzah, MD
Hematology & Oncology Physician
Deborah Hager, BA
Counselor
Samantha Hainline, ATC
Athletic Trainer
Jill Halcarz, D.D.S.
General Practice Dentistry
Carl Hale, PSY.D., H.S.P.P.
Clinical Neuropsychologist
Sydney Hale
Behavior Technician
Andrenia Hall
Behavior Technician
Gladys Hall
Licensed Practical Nurse
Ira Hall
Behavior Technician
Kimberly Hall, RBT
Behavior Technician
Layla Hall, RBT
Behavior Technician
Robert Hall, D.C.
Chiropractor
Shalonda Hall, OT
Occupational Therapist
Teresa Hall, RD
Registered Dietitian
Kenneth Ham, M.D.
Orthopaedic Surgery Physician
Ahmad Hamdan, OTR/L
Occupational Therapist
Nicole Hamilton, PHARMD
Pharmacist
Matthew Hammett, DC
Chiropractor
Patricia Hammett, D.C.
Chiropractor

Nearby Cities in Indiana

Other Indiana cities with provider coverage in the CMS NPPES registry.

Compare specialties side-by-side →

Frequently Asked Questions

How many doctors are in Merrillville, IN?
There are 1,935 registered healthcare providers in Merrillville, IN, covering 20 specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Merrillville?
The most common specialties in Merrillville are Behavior Technician, Counselor, Mental Health Counselor, Clinical Social Worker, Physical Therapist. Behavior Technician has the most providers with 607.

Provider data from CMS NPPES (download.cms.gov/nppes); specialty classification from NUCC Health Care Provider Taxonomy. PlainDoctor does not rate or rank providers. Methodology · About

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from CMS National Plan and Provider Enumeration System (NPPES). Consult a qualified professional before making decisions based on this data.

Compiled from official public sources by the PlainDoctor editorial team.