Active NPI 1922162262 Individual Practitioner Male Practitioner

Dr. Nathaniel J Merrell , MD

Surgery • Leominster, MA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Nathaniel Merrell, MD is a certified Surgery practicing in Leominster, MA. With approximately 39 years of clinical experience since graduating from University Of Rochester School Of Medicine And Dentistry in 1987, Dr. Merrell delivers high-quality medical care to the local community at 100 HOSPITAL RD.

Dr. Merrell is affiliated with R Leslie Shelton Md Pc and accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient outpatient office visit, new patient outpatient office visit, follow-up hospital inpatient care per day. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

100 Hospital Rd
Suite 2b

Leominster, MA 014532253

Telephone 9788406481

Fax 9788400506

Associated Practice Facility / Clinic

🏢 Medical Associates Pediatrics, P.c. Facility NPI 1417946161

Medicare Profile & Education

Medical School

University Of Rochester School Of Medicine And Dentistry

Graduation Year

1987

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery in Leominster, MA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

39 Yrs -0.7 yrs vs City Avg

City Avg: 39.7 Yrs

State Avg: 28.2 Yrs

Regional Practice Density

3 Specialists

Practicing in Leominster, MA (1077 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

72.2% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Merrell (39 Years) 39 Yrs

Leominster Specialty Average (39.7 Years) 39.7 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
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	86	72	$225.00	$57.45
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	66	66	$350.00	$112.37
99231 Follow-up hospital inpatient care per day, typically 15 minutes	39	23	$150.00	$48.77
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	29	29	$450.00	$128.74
99202 New patient office or other outpatient visit, typically 20 minutes	29	29	$300.00	$73.26
12031 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.5 cm or less	19	19	$800.00	$240.91
99221 Initial hospital inpatient care per day, typically 30 minutes	13	13	$400.00	$81.27

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	84	63	$225.00	$58.09
99202 New patient office or other outpatient visit, typically 20 minutes	50	50	$300.00	$74.28
99231 Follow-up hospital inpatient care per day, typically 15 minutes	50	31	$124.00	$49.90
99221 Initial hospital inpatient care per day, typically 30 minutes	37	37	$400.00	$83.46
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	37	37	$350.00	$114.51
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	33	33	$450.00	$131.05
99213 Established patient office or other outpatient visit, typically 15 minutes	17	16	$283.82	$92.32

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99231 Follow-up hospital inpatient care per day, typically 15 minutes	86	32	$100.00	$39.79
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	80	80	$350.00	$117.84
99213 Established patient office or other outpatient visit, typically 15 minutes	49	45	$275.00	$95.74
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	43	42	$450.00	$139.14
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	37	28	$225.00	$59.58
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	24	24	$400.00	$176.14
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	20	20	$500.00	$204.90
12031 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.5 cm or less	17	17	$800.00	$278.83
19301 Partial removal of breast	14	12	$2500.00	$746.79
99202 New patient office or other outpatient visit, typically 20 minutes	12	12	$300.00	$76.92
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	12	11	$325.00	$135.19
38525 Biopsy or removal of lymph nodes of under the arm, open procedure	11	11	$1460.00	$254.09

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	71	71	$350.00	$118.89
99213 Established patient office or other outpatient visit, typically 15 minutes	45	40	$275.00	$96.78
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	40	37	$450.00	$141.21
99231 Follow-up hospital inpatient care per day, typically 15 minutes	39	21	$100.00	$39.87
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	34	27	$225.00	$59.72
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	33	33	$400.00	$177.29
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	20	20	$500.00	$208.04
36561 Insertion of central venous catheter and implanted device for infusion beneath the skin, patient 5 years or older	15	15	$1100.00	$351.55
10060 Simple or single drainage of skin abscess	13	13	$650.00	$133.05
47562 Removal of gallbladder using an endoscope	11	11	$2500.00	$699.30

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	73	73	$350.00	$114.70
99213 Established patient office or other outpatient visit, typically 15 minutes	59	49	$275.00	$80.02
99231 Follow-up hospital inpatient care per day, typically 15 minutes	50	31	$98.40	$41.57
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	40	40	$436.25	$146.21
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	29	29	$400.00	$174.45
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	19	19	$465.79	$213.27
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	18	12	$225.00	$48.76
47562 Removal of gallbladder using an endoscope	15	15	$2500.00	$719.31

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99231 Follow-up hospital inpatient care per day, typically 15 minutes	101	33	$80.00	$41.17
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	70	70	$350.00	$114.33
99213 Established patient office or other outpatient visit, typically 15 minutes	62	55	$275.00	$78.34
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	52	52	$450.00	$211.51
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	38	38	$400.00	$173.03
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	34	25	$225.00	$47.78
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	27	25	$325.00	$114.52
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	17	17	$400.00	$143.23
36561 Insertion of central venous catheter and implanted device for infusion beneath the skin, patient 5 years or older	16	16	$1100.00	$351.34
19301 Partial removal of breast	15	13	$2000.00	$727.41
47562 Removal of gallbladder using an endoscope	12	12	$2500.00	$711.40
38525 Biopsy or removal of lymph nodes of under the arm, open procedure	11	11	$1460.00	$257.68

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	63	63	$350.00	$109.63
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	53	53	$400.00	$166.76
99213 Established patient office or other outpatient visit, typically 15 minutes	49	42	$239.29	$73.97
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	36	32	$181.94	$44.74
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	32	32	$450.00	$204.15
99231 Follow-up hospital inpatient care per day, typically 15 minutes	21	13	$80.00	$39.46
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	20	18	$305.00	$109.01
19301 Partial removal of breast	16	13	$2000.00	$646.99
36561 Insertion of central venous catheter and implanted device for infusion beneath the skin, patient 5 years or older	13	13	$1100.00	$349.39

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	76	76	$334.21	$107.57
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	68	43	$117.65	$43.68
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	40	40	$373.75	$163.25
99213 Established patient office or other outpatient visit, typically 15 minutes	38	35	$166.45	$72.92
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	31	30	$430.65	$199.66
99231 Follow-up hospital inpatient care per day, typically 15 minutes	22	14	$80.00	$38.68
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	18	17	$215.28	$107.07
47562 Removal of gallbladder using an endoscope	15	15	$2500.00	$655.30
19301 Partial removal of breast	14	12	$2000.00	$620.22
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	13	12	$384.62	$135.07
36561 Insertion of central venous catheter and implanted device for infusion beneath the skin, patient 5 years or older	12	12	$1100.00	$340.78

Medical Specialties & State Licenses

Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

State License MA 72557

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

3108708 (MA)

Hospital & Practice Group Affiliations

R Leslie Shelton Md Pc

100 Hospital Rd, Leominster, MA 014532244

Phone: 9788406481

Practice Associates & Co-Workers

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

1 Associated Practitioners

Dr. Robert Shelton , MD

Surgery

NPI 1538223870

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 July 08, 2007

NPI status registered as active in NPPES database

📍

Updated Practice Location July 08, 2007

Registered at 100 HOSPITAL RD, SUITE 2B, LEOMINSTER, MA 014532253 (Tel: 9788406481)

📍

Updated Business Mailing Address July 08, 2007

Registered at 100 HOSPITAL RD, SUITE 2B, LEOMINSTER, MA 014532253 (Tel: 9788406481)

👤

Provider Name / Credentials Updated July 08, 2007

Recorded as NATHANIEL MERRELL, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Surgery (License #72557 in MA)

🟢

Initial NPI Registration & Enumeration December 21, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

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NPI Administrative Meta

NPI Number: 1922162262

Entity Type:

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

Enumeration Date: December 21, 2006

Last Update: July 08, 2007

Sole Proprietor: No

Update or Correct Profile

Mailing Address

100 Hospital Rd, Suite 2b

Leominster, MA 014532253

Phone: 9788406481

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.