Dr. Natarajan Ravendhran, MD
- Medicare services, 2024
- 416
- Medicare patients, 2024
- 306
- Part D claims, 2024
- 465
- Hospital affiliations
- 2
- Industry payments
- $760,752
- Practice address
- 700 Geipe Road, Suite 220, Baltimore, MD 21228
- Practice phone
- Call (410) 242-3636
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
GastroIntestinal Diagnostic Center
Surgery Center - Medicare-Certified · Baltimore, Maryland
Find Dr. Ravendhran's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Natarajan Ravendhran is a gastroenterologist in Catonsville, Maryland
Dr. Ravendhran practices at GastroIntestinal Diagnostic Center in Baltimore, Maryland.
Dr. Ravendhran's NPI, 1821071069, was assigned on November 22, 2005. Dr. Ravendhran holds Maryland license D19648.
- NPI
- 1821071069NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6406913219
- NPI enumeration date
- November 22, 2005
- NPI status
- Active
- Offers telehealth
- Yes
- Practice phone
- (410) 242-3636
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 79
- Medical school graduation
- 1973
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Natarajan Ravendhran practices at GastroIntestinal Diagnostic Center in Baltimore, Maryland
Dr. Ravendhran's primary practice is GastroIntestinal Diagnostic Center, at 700 Geipe Road, Suite 220, Baltimore, MD 21228. The practice phone is (410) 242-3636.
- GastroIntestinal Diagnostic Center700 Geipe Road, Suite 220, Baltimore, MD 21228Phone(410) 242-3636
Source: Dmand AI Affiliation Data
Dr. Natarajan Ravendhran is affiliated with 5 sites of care and 4 medical groups
Dr. Ravendhran's primary practice is GastroIntestinal Diagnostic Center in Baltimore, Maryland. Dr. Ravendhran is also affiliated with The Johns Hopkins Hospital. The medical group on file is Digestive Disease Associates. Dmand AI also links Dr. Ravendhran to 1 more hospital, 3 medical groups and 2 group practices and clinics, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Natarajan Ravendhran's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ravendhran practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| GastroIntestinal Diagnostic Center | Available with a free account |
| +4 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Natarajan Ravendhran is one of 405 gastroenterologists in Maryland
Gastroenterology is Dr. Ravendhran's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Ravendhran is licensed in Maryland.
Specialties and state licenses
- Gastroenterology, MarylandPrimary
Gastroenterologists near Dr. Ravendhran
Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Natarajan Ravendhran billed Medicare for 416 services in 2024
CMS data shows 416 Medicare services from Dr. Ravendhran across 8 procedure codes in 2024, for 306 Medicare patients. Medicare paid $32,630 for them.
Dr. Ravendhran's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6052024: 33345%
- Imaging
- 2023: 962024: 4454%
- Surgery
- 2023: 2362024: 3983%
- Tests and treatments
- 2023: 792024: 0100%
- Other services
- 2023: 682024: 0100%
Where Dr. Ravendhran's Medicare services took place, 2024
- In an office23456%
- In a facility18244%
Dr. Ravendhran compared with the Maryland median for gastroenterologists, 2024
- Dr. Ravendhran
- Maryland median
- Medicare services
- 416vs 66838% below
- Medicare patients
- 306vs 39022% below
- Part D claims
- 337vs 39214% below
Medians across 396 gastroenterologists in Maryland with Dmand AI profiles that report each measure.
Dr. Ravendhran's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ravendhran and other gastroenterologists in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Natarajan Ravendhran treated 306 Medicare patients in 2024, average age 70
CMS counts 306 Medicare patients who saw Dr. Ravendhran in 2024. The largest group is 65 to 74, with 153 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 14% are also on Medicaid. Their average risk score is 1.71, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Ravendhran's median patient age at 63, with 59% women.
Dr. Ravendhran's Medicare patients by age, 2024
Dr. Ravendhran's Medicare patients by sex, 2024
- Women14748%
- Men15952%
Chronic conditions among Dr. Ravendhran's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis52%
- Diabetes43%
- Chronic kidney disease33%
- Ischemic heart disease32%
- Mood disorders31%
- Depression28%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ravendhran's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women59%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Natarajan Ravendhran wrote 465 Medicare Part D claims in 2024
In 2024, Dr. Ravendhran wrote 465 Medicare Part D claims for 145 patients. 80% of them were for generic drugs. CMS names the drug for 337 of them, across 13 drugs with 11 or more claims each, at $117,836 in total drug cost. In 2023, CMS named 548 claims across 17 drugs.
Dr. Ravendhran's Part D claims by kind of drug, 2024
- Generic372 claims80%
- Brand-name93 claims20%
Dr. Ravendhran's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Ravendhran's Part D claims, 2024
- Antibiotics6%29 of 465 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 5482024: 33739%
Drugs named by CMS: 13 in 2024, 17 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Natarajan Ravendhran offers telehealth to Medicare patients
CMS lists Dr. Ravendhran as offering telehealth.
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Natarajan Ravendhran received $760,752 in industry payments from 2016 to 2025
CMS Open Payments shows 1,757 general payments to Dr. Ravendhran from 60 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 66% of the total. Gilead Sciences, Inc. paid the most, $426,123.
General payments to Dr. Ravendhran by program year, 2016 to 2025
General payments to Dr. Ravendhran by kind, 2016 to 2025
- Speaker and faculty fees$503,70766%
- Consulting fees$127,18317%
- Travel and lodging$79,22010%
- Food and beverage$44,5266%
- Other$6,0641%
Companies that paid Dr. Ravendhran the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Natarajan Ravendhran's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Natarajan Ravendhran
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Natarajan Ravendhran's NPI number?
Dr. Natarajan Ravendhran's NPI number is 1821071069. It was assigned on November 22, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Natarajan Ravendhran?
Dr. Natarajan Ravendhran is a gastroenterologist in Catonsville, Maryland. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Natarajan Ravendhran practice?
Dr. Ravendhran practices at 700 Geipe Road, Suite 220, Baltimore, MD 21228. Dr. Ravendhran's primary practice is GastroIntestinal Diagnostic Center in Baltimore, Maryland. Dmand AI also links Dr. Ravendhran to 1 hospital, 3 medical groups and 2 group practices and clinics.
What is Dr. Natarajan Ravendhran's office phone number?
The practice phone on file for Dr. Ravendhran is (410) 242-3636.
What is Dr. Natarajan Ravendhran's medical license number?
Dr. Ravendhran holds Maryland license D19648.
Which hospitals is Dr. Natarajan Ravendhran affiliated with?
Dr. Ravendhran is affiliated with The Johns Hopkins Hospital. Dmand AI links Dr. Ravendhran to 1 more hospital.
What medical group is Dr. Natarajan Ravendhran part of?
Dr. Ravendhran is linked to Digestive Disease Associates. Dmand AI links Dr. Ravendhran to 3 more medical groups.
Does Dr. Natarajan Ravendhran accept Medicare?
Yes. CMS data shows Dr. Ravendhran billed Medicare for 416 services in 2024.
Does Dr. Natarajan Ravendhran offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Ravendhran as offering telehealth services.
How many Medicare patients does Dr. Natarajan Ravendhran see?
CMS counts 306 Medicare patients who saw Dr. Ravendhran in 2024, with an average age of 70.
Show 4 more questionsShow fewer questions
What services does Dr. Natarajan Ravendhran bill to Medicare?
In 2024, Dr. Ravendhran's most billed Medicare services were hospital inpatient care (99232), office visit, established patient (99214) and office visit, established patient (99213).
What drugs does Dr. Natarajan Ravendhran prescribe most?
In 2024 Medicare Part D data, Dr. Ravendhran's most prescribed drugs by claims were Ursodiol, Omeprazole and Pantoprazole Sodium.
Has Dr. Natarajan Ravendhran received payments from drug or device companies?
CMS Open Payments shows $760,752 in general payments to Dr. Ravendhran from 60 companies from 2016 to 2025. The largest total came from Gilead Sciences, Inc.
How long has Dr. Natarajan Ravendhran been practicing?
Dr. Ravendhran graduated from medical school in 1973, 53 years ago.
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