Active NPI 1154735587 Individual Practitioner Female Practitioner

Dr. Grace Gia-Ling Wong Casserly , MD

Internal Medicine • Halethorpe, MD

✓ Accepts Medicare Assignment Telehealth Available

Professional Overview & Biography Verified Profile Summary

Dr. Grace Casserly, MD is a certified Internal Medicine practicing in Halethorpe, MD. With approximately 12 years of clinical experience since graduating from University Of Southern California Keck School Of Medicine in 2014, Dr. Casserly delivers high-quality medical care to the local community at 1701 TWIN SPRINGS RD.

Dr. Casserly is affiliated with Montage Medical Group and accepts Medicare assignment . Telehealth and virtual consultation options are available for eligible patients.

Frequently performed procedures and clinical services include established patient outpatient office visit, annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit, remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

1701 Twin Springs Rd

Halethorpe, MD 21227

Telephone 4107375000

Associated Practice Facility / Clinic

🏢 Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc Facility NPI 1942546486

Medicare Profile & Education

Medical School

University Of Southern California Keck School Of Medicine

Graduation Year

2014

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

Telehealth Services Available

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Halethorpe, MD

Established Specialist (10-20 Yrs)

Practitioner Clinical Experience

12 Yrs -6.1 yrs vs City Avg

City Avg: 18.1 Yrs

State Avg: 28.1 Yrs

Regional Practice Density

9 Specialists

Practicing in Halethorpe, MD (4114 Statewide)

Telehealth Adoption Rate

11.1% Regional Adoption

✓ Offers Virtual Consultations

Medicare Pricing Discount

57.8% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Casserly (12 Years) 12 Yrs

Halethorpe Specialty Average (18.1 Years) 18.1 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	1,220	615	$238.00	$96.50
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	325	325	$234.00	$21.03
99454 Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days	239	35	$115.00	$54.22
99213 Established patient office or other outpatient visit, typically 15 minutes	102	95	$150.00	$82.56
99457 Management using the results of remote vital sign monitoring per calendar month, first 20 minutes	100	28	$107.00	$52.92
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	85	81	$289.00	$121.44
G0008 Administration of influenza virus vaccine	76	74	$44.74	$33.86
90662 Influenza vaccine split virus, preservative free	72	70	$109.67	$76.60
G0009 Administration of pneumococcal vaccine	64	64	$48.00	$34.31
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use	63	63	$567.00	$289.60
69210 Removal of impacted ear wax	52	49	$114.15	$50.98
83036 Hemoglobin A1C level	41	41	$27.00	$9.52
99495 Transitional care management services for problem of at least moderate complexity	40	38	$342.00	$109.35
93000 Routine ekg using at least 12 leads including interpretation and report	29	28	$50.00	$14.83
99453 Remote monitoring of physiologic parameters, initial set-up and patient education on use of equipment	27	27	$44.00	$22.55
81003 Automated urinalysis test	24	22	$7.50	$2.20
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	21	21	$345.00	$176.59
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	15	14	$110.00	$57.93
G0402 Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment	14	14	$324.00	$162.94
G0438 Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit	11	11	$347.00	$55.81

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	1,186	567	$238.00	$119.25
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	240	240	$234.00	$97.02
99213 Established patient office or other outpatient visit, typically 15 minutes	102	95	$150.00	$87.24
G0009 Administration of pneumococcal vaccine	81	81	$48.00	$33.57
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use	74	74	$567.00	$281.39
G0008 Administration of influenza virus vaccine	53	52	$42.00	$33.57
90662 Influenza vaccine split virus, preservative free	52	51	$71.00	$69.48
G0438 Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit	42	42	$347.00	$150.64
93000 Routine ekg using at least 12 leads including interpretation and report	33	31	$50.00	$15.82
99495 Transitional care management services for problem of at least moderate complexity	33	30	$342.00	$182.74
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	29	28	$289.00	$173.90
69210 Removal of impacted ear wax	26	26	$110.12	$51.81
83036 Hemoglobin A1C level	26	24	$27.00	$9.52
81003 Automated urinalysis test	18	17	$7.50	$2.20
99406 Smoking and tobacco use intermediate counseling, greater than 3 minutes up to 10 minutes	14	11	$30.00	$15.98
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	14	14	$345.00	$179.51

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	937	510	$238.00	$130.97
99213 Established patient office or other outpatient visit, typically 15 minutes	161	145	$150.00	$95.29
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	159	159	$234.00	$121.86
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	97	97	$345.00	$182.41
G0009 Administration of pneumococcal vaccine	90	90	$48.00	$32.66
G0008 Administration of influenza virus vaccine	83	80	$42.00	$33.02
90662 Influenza vaccine split virus, preservative free	78	75	$71.00	$68.20
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use	60	60	$567.00	$278.19
99442 Telephone medical discussion with physician, 11-20 minutes	40	35	$150.00	$99.28
69210 Removal of impacted ear wax	29	28	$115.14	$51.89
93000 Routine ekg using at least 12 leads including interpretation and report	29	27	$50.00	$15.71
83036 Hemoglobin A1C level	27	23	$27.00	$9.59
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	27	27	$158.00	$131.89
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	26	26	$289.00	$189.99
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	17	16	$110.00	$58.54
G0438 Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit	17	17	$347.00	$163.84
99495 Transitional care management services for problem of at least moderate complexity	16	15	$342.00	$174.86
81003 Automated urinalysis test	15	15	$7.50	$2.21

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	321	207	$238.00	$139.31
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	264	264	$345.00	$181.14
99213 Established patient office or other outpatient visit, typically 15 minutes	136	110	$150.00	$97.17
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	56	56	$234.00	$145.33
G0008 Administration of influenza virus vaccine	48	48	$42.00	$18.83
90662 Influenza vaccine split virus, preservative free	47	47	$71.00	$64.99
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	44	44	$217.00	$120.93
G0009 Administration of pneumococcal vaccine	40	40	$48.00	$18.78
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	36	36	$158.00	$125.42
99442 Telephone medical discussion with physician, 11-20 minutes	20	15	$150.00	$100.13
69210 Removal of impacted ear wax	15	15	$116.67	$51.97
93000 Routine ekg using at least 12 leads including interpretation and report	14	13	$50.00	$16.24
69209 Removal of impacted ear wax by washing	14	14	$37.29	$18.42
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	13	11	$110.00	$58.15
83036 Hemoglobin A1C level	12	12	$27.00	$8.90
G0438 Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit	12	12	$347.00	$183.91
81003 Automated urinalysis test	12	11	$7.50	$2.25

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	30	28	$150.00	$81.18
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	25	23	$238.80	$115.41
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	24	24	$345.00	$178.31
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	23	23	$217.00	$113.28
G0008 Administration of influenza virus vaccine	20	20	$42.00	$18.00
90662 Influenza vaccine split virus, preservative free	18	18	$71.00	$60.98
G0009 Administration of pneumococcal vaccine	11	11	$48.00	$18.00

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	17	16	$167.00	$65.99

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	38	35	$157.79	$71.86

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	22	22	$157.00	$77.65

Medical Specialties & State Licenses

CMS Verified: 2020-08-21

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License MD D0083021

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.

Internal Medicine

NUCC Taxonomy Code: 207R00000X

State License CA A169212

Hospital & Practice Group Affiliations

Montage Medical Group

2 Upper Ragsdale Dr, Monterey, CA 939405736

Phone: 8317189701

Secondary Practice Locations

2401 W Belvedere Ave

Baltimore, MD 212155216

Phone: 4106019386

2 Upper Ragsdale Dr Bldg A

Monterey, CA 939405736

Phone: 8313333040

Practice Associates & Co-Workers

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

34 Associated Practitioners

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Family Medicine

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Pharmacist - Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist

NPI 1053899708

Doctor of Pharmacy (Pharm.D.)

Adeel Choudhary

Internal Medicine

NPI 1093179806

Dr. Ibrahim Qazi , PharmD

Pharmacist

NPI 1104254754

Doctor of Pharmacy (Pharm.D.)

Dr. David Hexter , MD

Emergency Medicine

NPI 1104805233

Doctor of Medicine (M.D.)

Dr. Leopoldine Modjo Kenmogne , MD

Internal Medicine

NPI 1114312444

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

15 Historical Events

📍

Updated Business Mailing Address August 21, 2020

Registered at 2 UPPER RAGSDALE DR BLDG A, MONTEREY, CA 939405736 (Tel: 8313333040)

📍

Updated Practice Location June 12, 2018

Registered at 1701 TWIN SPRINGS RD, HALETHORPE, MD 21227 (Tel: 4107375000)

📍

Updated Business Mailing Address June 12, 2018

Registered at 1701 TWIN SPRINGS RD, HALETHORPE, MD 212273553

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) June 12, 2018

Internal Medicine (License #D0083021 in MD)

✅

NPI Profile Active March 03, 2017

NPI status registered as active in NPPES database

📍

Updated Practice Location March 03, 2017

Registered at 2401 W BELVEDERE AVE, BALTIMORE, MD 212155216 (Tel: 4106019386)

📍

Updated Business Mailing Address March 03, 2017

Registered at 2401 W BELVEDERE AVE, BALTIMORE, MD 212155216

👤

Provider Name / Credentials Updated March 03, 2017

Recorded as GRACE CASSERLY, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) March 03, 2017

Internal Medicine (License #P30089 in MD)

✅

NPI Profile Active June 13, 2014

NPI status registered as active in NPPES database

📍

Updated Practice Location June 13, 2014

Registered at 2401 W BELVEDERE AVE, BALTIMORE, MD 212155216 (Tel: 4106019386)

📍

Updated Business Mailing Address June 13, 2014

Registered at 2401 W BELVEDERE AVE, BALTIMORE, MD 212155216

👤

Provider Name / Credentials Updated June 13, 2014

Recorded as GRACE WONG, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) June 13, 2014

Internal Medicine (License #P30089 in MD)

🟢

Initial NPI Registration & Enumeration June 13, 2014

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: 1154735587

Entity Type:

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

Enumeration Date: June 13, 2014

Last Update: August 21, 2020

Sole Proprietor: No

Update or Correct Profile

Mailing Address

2 Upper Ragsdale Dr Bldg A

Monterey, CA 939405736

Phone: 8313333040

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.